One of my favorite features of speedlites is High Speed Sync. This feature allows you to work with speedlites way past your camera’s normal sync speed (1/160 – 1/250 depending on camera). By shooting at very fast shutter speeds you can dramatically cut ambient light and can shoot what looks like night-time shots at high noon. Sounds incredible huh? Guess what, using it is as simple as pressing a single button.

Links to related articles:

• Learning to shoot in manual mode
• Photography Basics: Controlling Exposure
• The Exposure L – Understanding the Correlation Between Shutter and Aperture

Special thanks to our sponsor: GoPro

Host: Kerry Garrison

Practical Uses of ND Filters

Some photographers, especially nature and landscape photographers have long been familiar with neutral density filters most notably for allowing you to shoot a scene with a longer shutter speed for scenes such as waterfalls to get that silky effect to the water.

If we go back to the basics and look at the Sunny 16 Rule, this tells us that is bright sunlight at ISO 100 and 1/100th shutter speed, we will need to be at f/16. If we adjust our shutter to our video setting of 1/50th, then we need to be shooting at f/22 for a proper exposure. While this may work in some situations, if you want any creative control over your aperture settings, you will need to cut down the lighting entering the camera, again this is a great use of ND filters. Instead of using a faster shutter, we can simply use darker ND filters to cut down the light to where we want it.

Choosing an ND Filter

Most neutral density filters are fixed at a particular setting and generally come in settings from 1/4 stop all the way to 10 stops. Buying a small selection of ND filters is certainly one option, although a much more versatile option would be a variable ND filter that lets you adjust the density across a wide range.

The Variable ND Filters from FADER are an excellent example of this type of functionality. With the FADER Filters you have a range of 2-8 stops which, if we go back to our Sunny 16 Rule, only needs four stops to allow us to shoot at f/2.8. This allows us a broad range of creative control with your aperture.

At a bit over $300, these filters don’t come cheap so if you are on a budget you might want to get a couple of less expensive ones to start off with.

Fader Variable ND Filter

Using an ND Filter

There is nothing special or magic about using an ND filter, once it is on your lens it’s just as if someone dimmed the lights and you continue to set your exposure using aperture and ISO adjustments (remember, not shutter speed because we are locking that down to 1/50th second).

The following video demonstrates this concept by shooting the same scene and adjusting the FADER filter to make the scene darker while opening the aperture to compensate.

Summary

I hope you are enjoying these articles on getting started with DSLR video. Even though shooting video with a camcorder or other dedicated video camera is so easy that even a kid can do it, shooting video with a DSLR is actually quite complicated and requires a very different skill set than shooting still and often requires specialized gear to get top-notch results. If you are doing any video work, please post in the comments and let everyone know what you are doing.

ISO and Aperture

The good news is that two out of three aint bad. What I mean by this is that ISO and Aperture affect video exactly the same way that they affect stills. ISO will make the sensor more sensitive to light so just like stills, you can increase the light into the camera by increasing the ISO setting which, just like stills, will add digital noise to the image.

Just like still images, Aperture will open or close the lens’ aperture diaphragm to allow more or less light into the camera which will affect the depth of field.

So long as you already have a good handle on ISO and Aperture, the same principles apply to both stills and video so you already well on your way.

Shutter Speed

With stills, shutter speed is fairly simple to understand, a longer shutter will allow more light but may add motion blur while a fast shutter speed can freeze motion but cuts down on the amount of light entering the camera. The confusing part is how this affects video. Many new video DSLR owners simply think this affects only the light since the frames are already moving. The reality is that the shutter speed can have a significant impact on the video image and most of the articles on the internet are painfully difficult to understand.

The traditional standard for video is 24p (which is actually 23.976 frames per second) which is very pleasing to the eye and is pretty much the standard for camcorders and DSLR video recording (much more on this is available on Wikipedia).

To achieve a film look (which has just enough motion blur between frames to look natural without being “smeary”) you need to follow the 180 degree rule which, simply put, says that your shutter speed should be double the frame rate. This is one of those times when I want to say “don’t worry about what it means, just go with it” as the technical explanation is quite…well…technical. Tyler Ginter did a really good job explaining the technical side of this on his blog post 180 Degree Shutter – Learn It, Live It, Love It.

While I am not going to try to explain the whole 180 degree shutter concept, I will instead just jump into what it really means to you and your video.

Since we already know that when we are shooting stills with action, a slow shutter speed will have motion blur and a fast shutter speed will freeze action. When we translate this concept to video, a slow shutter speed will create a smeared look to the video. If the shutter is too fast there isn’t enough motion blur to smoothly transition from frame to frame causing a stuttering or staccato effect. If you have ever looked at something moving with a CRT monitor behind it you will know what this stuttering can look like. Sometimes, this can be used for creative effect like in the opening of Saving Private Ryan.

To see how this looks in actual video, I did this quick comparison of 24p video shot at both 1/50th (yes, I know 1/48 is double the 24fps but most cameras can’t do 1/48th shutter speed so we have to take the closest option which would be 1/50th) and 1/300th shutter speed.

What about exposure?

The issue with exposure is not when things are too dark as we can open up our aperture and increase our ISO (only to a certain point before we need additional lighting anyway) but when things are too bright, we only have a few options. If you are already at a small aperture and a low ISO and 1/50th of a second will result in an over exposure the temptation is to increase the shutter speed, but this is going to violate the 180 degree rule and cause the stuttering video.

The only way to knock the exposure down is with the use of a neutral density filter. The most versatile filter is a variable neutral density filter that allows you to dial in the amount of filtering. A good example of this is the Fader ND Mark II which is adjustable from 2 to 8 stops.

The real beauty of using a filter with this much versatility is that you can shoot at the relatively slow 1/50th of a second at wide open apertures to create a very short depth of field that just isn’t possible with regular camcorders. The ability easily create different depth of field shots  is a key reason many filmmakers are jumping onto the DSLR video bandwagon.

The Exception to the Rule

Let’s face it, every good rule deserves a good reason to break it and the 180 degree shutter rule is no different. In fact, there is one really good reason to break it and that is when you are specifically shooting for video that will be shown in slow motion. If we use the basic rule of having a shutter speed that is double the frame rate, when we slow down the video we will end up with more blurry video. If you shoot at faster shutter speeds, when you slow the video down you will get cleaner looking video.

This actually brings up a major difference between shooting stills and video. With stills, our final output will be a still frame. Sure, you may use some panning and zooming in a slidehsow which may require cropping that isn’t very tight but lets not digress too much. With video, you really need to think ahead about how the video will be played back. Will the video be sped up, played at normal speed, or slowed down as this final product needs to be considered when choosing the shooting settings.

Summary

Hopefully this has helped make some sense out of the shutter speed issue with DSLRs. If you are just going to be shooting video for yourself, you may not care much about all this but if you are trying to really make your video look its absolute best, and most certainly you can achieve incredible results with the current video enabled DSLR’s, then this is one of those topics that you really need to get a handle on.

In this post we are going to look at how to control exposure by manipulating the different settings on the camera such as ISO, Shutter, and Aperture.

What is exposure?
Exposure is, simply put, the amount of light that enters the camera and hits the sensor. The more light that hits the sensor the brighter the scene will be. If too much light hits the sensor, parts of the image will be “blown out”, this is considered to be over-exposed. A scene that is too dark and the details in the shadows are lost is under-exposed.

Under Exposed Image

Over Exposed Image

How to control exposure
There are three camera settings that control the exposure, these are:

• ISO speed
  • Controls the sensitivity of the sensor to light
• Aperture
  • The aperture controls the size of the diaphragm over the shutter, the smaller the aperture number the more open the diaphragm is, allowing more light to enter.
• Shutter speed
  • The slower the shutter, the more light will enter the camera

We will look at these settings in more detail to see exactly how the play together later. First, you need to start thinking of light in terms of “stops”. A stop is not an exact amount of light, it is a relative amount of light, each stop of light doubles the amount of light. For example, if we have a single lightbulb as our base light source, adding a second lightbulb (doubling the amount of light) increases the light by one stop. If want to increase the light by another stop we have to again double the amount of light to four lightbulbs. Understanding this is going to be the key to understanding how the different camera settings affect our exposure.

ISO Speed
As already mentioned, the ISO speed will control the sensitivity of the sensor. The lower the number, the less sensitive. For low light you will need a higher ISO number to make the sensor more sensitive. The downside is that the higher ISO the more digital noise (grainy look) will show up which will degrade the image quality.

Each time you double the ISO speed you increase the exposure by one stop, so ISO 400 will give you one stop of exposure more than ISO 200, and ISO 800 will give you one more stop over ISO 400 etc. Some cameras have some in-between ISO settings to provide a finer level of control.

You currently see high ISO performance as being a major selling point for new DSLR cameras as this allows them to shoot in lower light conditions with less noise.

Pro: Higher ISO allows shooting in lower light conditions
Con: Higher ISO settings result in more digital noise

High ISO Digital Noise

Aperture
Aperture is a little confusing because the larger the number the smaller the size. The largest aperture lenses are f/1.0 although most of the good prime lenses start at f/1.4 – f/1.6. Zoom lenses typically are not available that can do more than f/2.8.

So besides letting in more or less light, what does the aperture actually do? The more light that comes in at a particular shutter speed, the shallower the depth of field. If you want more depth of field you use a smaller (higher number) aperture setting.

Pro: Larger apertures allow more light in and thus allow shooting in lower light conditions
Con: Larger apertures reduce the depth of field which may not be desirable

Shallow Depth of Field

Deep Depth of Field

Shutter
The faster the shutter, the less light enters the camera, the slower the shutter the more light will enter the camera. If you are shooting in low light conditions, you may need a slower shutter speed, however, too slow of a shutter and you can introduce blur from the subject moving, accidental camera movement, or both.

Sometimes a little blur can help portray movement and action, a sharp bike rider with a blurred background will make the rider look like he/she is moving fast where a tack sharp image shows no motion at all and would make the same image look boring. While blurring on other images can ruin the image.

Pro: The right shutter speed can really make an image more dramatic. Fast shutter speeds can freeze action, slow shutter speeds can add a dramatic motion blur.
Con: Fast shutter speeds require lots of light, slow shutter speeds are harder to control

Fast Shutter Speed

Slow Shutter Speed

Summary
By understanding the three variables that control exposure along with the pros and cons of each one, you will be able to better control the different options that are available to you.

The Math
Feel free to skip right over this part, this is the boring part, it’s so boring I thought of putting a picture of an artistic nude shot next to it just to keep people awake. Ok, so here we go. Before you can calculate the depth of field you first must know the circle of confusion for your camera.

Don’t get too lost on me yet, for most of us digital SLR users this is  one of two numbers. For most of us with APS/APS-C sized sensors this number is 0.019948, for full frame sensors (the big Pro cameras) and 35mm film the number is 0.02501. This represents the sensor size. Again, don’t get all lost on me yet, just remember the number for your particular camera.

The first thing we need to calculate is the Hyperfocal distance, for this calculation you will need to know the focal length of your lens. the aperture you are using and the CoC (circle of confusion) for your camera.

The math to calculate the hyperfocal distance is as follows:

HyperFocal = (FocalLength * FocalLength) / (Aperture * CoC)

Thus, the Hyperfocal distance of a 50mm lens at f/2.8 on an APS sensor (Canon 30D in my case) is 146.85 feet.

Next we need to calculate the near point which is the closest distance that will be in focus given the distance bdetween the camera and the subject. The math here (yes, it gets SO much worse) is as follows:

NearPoint = (HyperFocal * distance) / (HyperFocal + (distance – focal))

This is somewhat  complicated because the focal length is in millimeters and those of us in the US are better with feet and inches still so if you want the end value to be in feet you have to do some more conversions. If we are using the same 50mm lens, at f/2.8 on an APS sensor at a distance of 10 feet (3048mm) then our HyperFocal distance is 146.85 feet (44,749.23mm), giving us a near focus point of 9.37 feet (2,856.66mm). Are we following along still? Did I lose anyone?

Alrighty then, let’s now calculate the far point distance, this is almost the same as before but using slightly different math, so here we go.

FarPoint = (HyperFocal * distance) / (HyperFocal – (distance – focal))

Without changing our values that we used before, we now know that are rear point is 10.72 feet (3,266.81mm). Take note that the near point is actually closer to you than the subject is, typically the focus is 1/3 in front of the subject and 2/3 behind the subject.

The final step is to calculate the total amount of focal distance. This is one I can even do without a calculator, we simply subtract the far point distance from the near point distance.

TotalDof = FarPoint – NearPoint

Giving our example so far we have a total depth of field of 1.35 feet (411.48mm).

Let’s get practical
Why on earth would you want to know this? The simple answer is you may not, nor may you ever care to know it. When shooting portraits, weddings, events, and pretty much anything else it really isn’t going to matter much. However, if you are the type that wants to set up a shot and have it be EXACTLY what you want, there is simply no other way to know what the camera is going to do. This is important in macro, food, and product photography. By knowing exactly where you focus points begin and end you can more accurately design and execute precise shots.

Ok, how about the easy way?
This is kind of like taking a digital photography class and having to spend a semester cooking your own B&W film, its good to know the theory before taking on the practical application. So how can we do this easier than having to pull a scientific calculator each time you want to set up a shot?

• f/Calc Spreadsheet (download) – This is an Excel spreadsheet that will do all the math for you. This was development by me and is free to use.
• f/Calc Windows and Palm App (website) If you want a simple but powerful Windows or Palm based application, f/Calc does Field of View, Angle of View, Magnification, Spot Meter, f Numbers, Depth of Field and Hyperfocal distance
• PhotoCalc for iPhone (website) – Not only does it do everything for DoF, it also incorporates a sunrise/sunset function, flash exposure calculator, and Exposure Reciprocation calculator.
• CamCalc (Market) Android App for Depth of field, field of view, focal length equivalents, flash calculations, color temp. conversion, miniatures, and sunrise, sunset.
• PhoforPho (Market) Android App with Exposure calculator, Hyperfocal calculator, DoF calculator, Timer, and Exposure compensation calculation for multiple exposures.

I know this has been a doozy of an article to read through just to get to some free or almost free (PhotoCalc is $2.99) tools to make it dead simple to do these calculation. Hopefully this will help you perfect your images help you to use depth of field to its full extent.

Often we try to use the fastest shutter speed possible to help avoid blur but when shooting a moving object you sometimes need some amount of blur or it can look like the subject of the image is sitting still. In many cases you want to have the sense of movement to help convey the story of the object.In the case of the ceiling fan we want to show a little movement of the blades since the moving blades is going to be more typical of what you would see by looking at the fan once installed. We also want to show that this is a five-bladed fan so we have to be careful not to have too much blur that we lose all the details.

Let’s take a look at a series of shots taken at different shutter speeds:

1/10th Second - Way too much blur

1/25th Second - Better but lacking detail

1/40th Second - Looking good

1/100th Second - Not enough, just looks fuzzy

1/200th Second - Almost no movement

As you can see the photos taken at the two extreme ranges show either far too much blur or not enough blur to make for a good image. The photo taken at 1/40th maintains a little more detail than the images shot at 1/25 making it a more suitable image for our use.

Summary

The whole point here is to get you to experiment more with shutter speeds to capture a sense of movement, action, or speed. By adjusting the shutter speed you can control how much or how little the blur effect will have.

Getting Started
Most cameras, including newer point and shoot cameras will let you shoot in full manual mode. The problem with going manual is that if you don’t have your settings “just right” you can end up with an image that is too dark or too light. Without a basic understanding of the different settings, it can be difficult to get a good shot. However, with a basic understanding of the three variables even the most newbie photographer can learn to take better pictures by getting away from the automatic settings.

ISO Speed
The ISO speed is equivalent to the ISO speed we used to use on film cameras, this describes the light sensitivity of the film that is being used. The higher the ISO speed, the more light the sensor can pick up. For example, if your camera is set to ISO 800 you can take a well exposed image in a darker room than you could with ISO 100. By definition you would always want to run your camera in the highest ISO speed possible. While this may sound like a good idea, the downside is that the higher the ISO speed, the more “noise” will be introduced to the image, thus degrading the image quality. In most cases, you will get excellent results by using ISO 200-400 outdoors and 400-800 indoors. This does not take into account your camera model as some cameras do better than others at the higher ISO settings.

Shutter Speed

Medium Shutter Speed to Show Movement

The shutter speed is one of the easiest settings to understand as it simply means how fast the shutter opens and closes when you press the shutter button. The faster the shutter speed the better the camera will freeze the action of an event. This setting is represented in seconds, a fast shutter speed would be something like 1/2000^th of a second. A long shutter speed such as 1/30^th of a second or slower can result in blurry images if you don’t use a tripod. Like the other settings, the shutter speed also affects the amount of light that hits the sensor. The faster the shutter speed, the less light that comes into the camera. So while a fast shutter speed can freeze action, you need more and more light in order to prevent getting a dark picture the faster you set the shutter. When you cant get a bright enough image, you will need to slow down the shutter speed. In some cases you may want to get a motion blur such as a waterfall or freeway traffic, these shots require a very long shutter speed.

Shallow Depth of Field

Aperture
Understanding aperture is probably the most difficult setting for most people to grasp, because of this we wrote an entire article about it. The aperture is an adjustable opening in the lens that controls the amount of light that can enter the camera. The aperture setting is expressed in f stops with the largest opening having a smaller number so a wide open aperture is going to have an f-stop of around f/1.4. The aperture setting can have a big effect on the depth of field which allows one part of the image to be in focus and the rest of it being blurry which helps to highlight the subject of the photograph.

Starting Points
Without having a light meter or lots of experience how do you know what settings to start with? The way I learned was to set my ISO to what I wanted, typically 200-400 ISO outdoors and 400-800 ISO indoors, and put the camera in P mode and press the shutter half way down. Inside the viewfinder the camera will show the settings it will use to take the picture. Then you can put the camera into Manual mode and adjust the settings to match. After some practice you should be able to set some basic settings fairly close to what they need to be, then, by pressing the shutter half way down the camera will autofocus and then take a meter reading which should show in the viewfinder or on a display depending on your camera. Then you can adjust shutter speed or aperture to change the exposure to get it where you need.

Using the Histogram
If your camera will display a histogram after shooting an image, then you need to take advantage of this feature. By looking at the histogram of an image you can quickly tell if the image was properly exposed or not. With a digital SLR camera you want the histogram to be a nice curve with the curve being just to the right of center like our example one here. This is actually saying that the image is just slightly overexposed. With film, if you overexposed the image, you would lose detail so it was better to slightly underexpose. With digital, shadows will lose detail so it is better to slightly overexpose.

Practice Practice Practice
There is nothing that will beat getting out and getting behind the camera and learning how to use it well. If you plan on making photography a serious hobby or more, you will need to learn how to use manual mode for those times when the automatic or program mode settings just won’t cut it or for when you want to create an effect that you just can’t get any other way.

Get out and practice and be sure to post some comments and post some pictures to our Flickr group.

If you can master controlling the depth of field in your photographs you will be taking your photographs to a whole new level. What do we mean by controlling depth of field (DoF)? This is the effect where the subject is in sharp focus but the rest of the image is slightly out of focus. The effect is referred to as bokeh. The more bokeh, the more dramatic the blurring effect. In this article, we will discuss how to control the amount of bokeh in your images.

Getting Started

Being able to control the depth of field is not very easy on lower end cameras as you need to be able to shoot in either an aperture priority mode or in a full manual mode. If you have a fully automatic point and shoot then you will not be able to achieve the effect you want

50mm 1/2500 f/2.8

50mm 1/40 f/22

The setting you need to be able to adjust is the aperture setting, the larger the aperture (the smaller the number) the shorter the focal plane will be. This is one reason that some people buy very fast (larger aperture) lenses. A less expensive lens may have an aperture range of something like f/4.0  -  f/5.6, while you will achieve some bokeh effect with this lens, it will not be as pronounced as it would be if the lens has a f/1.6 – f/2.8.

Without having a lens with a very large aperture, the other way to achieve a dramatic bokeh effect is to use a long zoom lens to shoot very close objects. Since a long lens won’t be able to focus on both something very close and things at a distance, you can achieve a strong bokeh if there is enough separation between the subject and the rest of the image.

225mm 1/800 f/5.6

70mm 1/800 f/5.6

Understanding Aperture

Diagram of decreasing aperture sizes (increasing f-numbers) for “full stop” increments (factor of two aperture area per stop) – Source: Wikipedia

The aperture setting is the size of the opening that is used to let light into the camera and onto the sensor. The size of the opening is measured is F-stops. The confusing part is that the larger the aperture setting, the smaller the hole that will be used to take the picture. The reason why lenses with a very large aperture (smaller f-stop number) are more expensive is because the lenses require more engineering and typically use better and more complicated lens elements. These higher end lenses usually have glass that is manufacturered to higher tolerences and may include special coatings on the glass elements, this helps explain the high costs of the top end lenses.

The other side effect of getting a lens with a small f-stop number is that the smaller the f-stop, the more light will come in per image thus allowing you to shoot in lower light conditions. A lens with a f/1.8 can shoot well exposed pictures in a situation that is much darker than an f/4.0 lens could shoot in.

Why Control DoF?

So now that we know the how of controlling depth of field, let’s talk about why we would want to do this. Isn’t the goal of every picture to have the ultimate tack sharp image? Why would you intentionally blur part of the image? The simple answer is mood. Quite often, the background of an image may be distracting from the subject matter, think of a bride standing in front of a wall of flowers. In this case, the bride is obviously the main subject and anything else may distract from the subject, by blurring out the flowers behind the bride, you can retain some of the color and texture without the detail, adding a much more dramatic feel to the image.

One thing to be aware of is overdoing the bokeh effect. Since the eye is drawn to the lightest parts of an image first, a common problem with a heavy bokeh is creating a large blob of very light color, this can be more distracting to the image than if the background would have been in focus. Used right, the effects can be stunning.

Choosing Lenses

When choosing a new lens, once you decide once you decide the focal range you are looking for, then you go for the lens with the largest aperture (again, lowest number) that you can afford. A common misconception with new photographers is that a lens labeled with a single aperture will only do that aperture. The labeling denotes the maximum aperture at the listed focal length, So if you have a 70-300 f/4.0 – f/5,6, then your maximum aperture at 70mm will be f/4.0 but will shrink to f/5.6 at 300mm. Whereas a 70-200 f/2.8 can maintain f/2.8 throughout the entire focal range but can also go to the minimum aperture of you camera (often f/22 or lower),

Now that you have these basics down, you should be able to tell that the faster (smaller f-stop number) the better able the lens is to shoot in darker conditions and when used at the lens’ maximum aperture, the more pronounced the bokeh effect will be.

Be sure and post some images that you have taken to the Flickr user group and tag them with DoF and cameradojo.

Stop the Madness
So…what is a stop exactly? Simply put, if you take a given amount of light and double it, you are moving up one stop, if you cut the amount of light in half then you have gone down a stop. So a stop isn’t a specific amount of light, instead it is a measure of difference between the amount of light. To be completely technical about it, the term “one f-stop” refers to a factor of √2 (approx. 1.41) change in f-number, which in turn corresponds to a factor of 2 change in light intensity. So how can we visualize this easily? If we have a single light bulb as a base light source, then two light bulbs would increase the light by 1 stop. Going to 4 light bulbs doubles the output again giving us 2 stops, to get to 3 stops we then need 8 light bulbs, etc.

So let’s take the sentence in the introduction, if we wanted to expose one side of the face 1 stop under the other side of the face, what we are saying is we want half the amount of light on the shadow side that we have on the lit side. Pretty simple concept huh?

For the most part, we are actually going to be doing a lot of guesswork unless we have good light meters and can measure each piece of the scene. Using our DSLRs we can zoom into each area of the scene and look at the exposure meter in the camera for a pretty good meter reading as well.

How aperture and shutter affect light
Ok, so now we have a basic understand of what a stop is, now we need to see how to control this using the two basic controls, shutter speed and aperture. To illustrate the effect of aperture, we have created this chart that shows the amount of light that is gathered at typical aperture settings. While each camera/lens may have slightly different available aperture numbers, they are typically in multiples of 1.4 (as described in the previous section). As you increase the f-stop number to the next 1.4 increment, you halve the amount of light.

The effect of shutter speed is the same concept. Every time you double the shutter speed, you decrease the amount of light in half. If you cut the shutter speed in half, you double the amount of light.

Again, you can see this represented by a similar chart.

Where this gets interesting in combining aperture and shutter speed, you can get the same exposure with different combinations of aperture and shutter speed. For example, a shot taken at 1/500 at f/2.8 and a shot taken at 1/60 at f/8 will have the same equivalent amount of brightness, what will change is the depth of field.

Let’s take a look at one of our favorite studio lights, the Westscott TD5 Spidelite. The light head has 5 bulds in it, you can control the center bulb, and two sets of two bulbs. To show how this affects stops we can use the different combinations to control how many stops of light we have:

If we only turn on the center bulb and use that as our base reference point, we can then use the different variations to come up with the following amounts of light changes:

How can we use this information?

If you have a light meter than putting this information to use is just a matter of measure-adjust-repeat until you get the desired light readings you want. With a modern DSLR, we can do this with the camera’s light meter with fairly good results.

Let’s say we want to use a two-light setup to light a subject’s face and we want one side 1 stop darker than the lit side. To begin with we zoom into the lit side of the face (or use the Photovision Digital Calibration target aimed at the light source , the small size works best for this) and adjust the lights until you get a good exposure reading. This is the time to make the camera adjustments to center the exposure in your camera’s meter.

Good Exposure Reading

The next step is to meter the shadow side of the face, using the same technique of zooming into the subject or a target to get a meter reading. This time however we want to underexpose by one stop.

-1 Stop Under Exposed

At this point we now have the camera setup for the right exposure on the lit side of the face and we checked to make sure the shadow side was one stop underexposed, we are now good to take our shots and be confident that the lighting will turn out good.

Summary
Hopefully this has helped to explain the concept of stops as it pertains to the relative amount of light and how we can use the tools we have available to make sure we have good lighting and exposures. To discuss this with others, please join us in our Camera Dojo Flickr Users Group.

The Setup

The setup consists of a seamless paper background suspended on a background stand. To the camera right is 45″ Westcott Halo with a Westcott StrobeLite Plus which is very similar to using a shoot-thru umbrella which provides a good key light for but is big enough to provide a soft transition between the shadows and the highlights. To camera left is a 28″ Westcott Apollo softbox with a Westcott Strobelite Plus which is mostly used to light the background to soften any shadows that fall on it but also spills onto the subject slightly to help soften the shadows caused by the key light. The camera I use is a Canon EOS 50D with a Canon 580 EX II flash mounted on it along with a Lumiquest 80/20 diffuser. The key here is that the 580 EX II is set to manual mode and dialed down to 1/32 power. This means the light from the flash is fairly insignificant to the exposure and is really only used to fire the optical slaves on the StrobeLite’s. To me this is preferred to having PC Sync cords and can be more reliable than using cheap radio slaves in some conditions.

Portrait Lighting Diagram

Portrait Lighting Setup

Using the Lighting Setup

Short Lighting

Given a perfect setup, I would use a backlight on the background but there isn’t always enough room to work with when doing these kinds of shoots. By using the Apollo and the Halo in this configuration I am still able to get enough light on the background to give it a type of gradient look that keeps the background from being too boring.

If someone is facing to their right, I get a nice broad lighting effect, if they are looking to their left, I just pull them a little more away from the background so that the light from the Apollo to the right of the camera will provide a short lighting effect.

Having a versatile lighting setup means you can run people through very quickly and still be able to get a variety of looks without ever having to move lights around.

Avoid Issues With Glasses

Avoid Issues with Glasses

By having the lights more off to the side rather than more straight on to the people, we can also minimize issues with glasses.

Lighting is very much basic geometry, the light will bounce off an object at the same angle it hit it. Therefor, is you angle the lights so that light is not going to bounce back to the camera, the lenses in the glasses will show almost no reflection from the light source. The only time this lighting setup presents any issues with glasses is if someone has a tendency to raise their chin up during pictures. A simple suggestion for them to lower their chin should be all that is needed to solve the glasses issue.

Getting Group Shots

Large Group Shot

The biggest problem you will run into in this situation is a large group. This is the only time I will move the lights at all and the key light will be pulled back towards the camera to help reduce shadows on people caused by standing behind or beside someone else that is blocking the light. The bigger issue is getting people to squeeze together enough so that the frame doesn’t exceed the edges of the background. You might have to get creative in placing people to keep the group width narrow enough. I take the 9′ wide rolls since they will (barely) fit into my car. The 12′ rolls would be better for groups but they are harder to transport and are available in less color options.

Summary

The biggest thing when doing a shoot like this is to not over-think it. A simple lighting setup can be very effective. The more complicated you make it, the more problems can arise, the more time it takes to setup and tear down, and the more it costs to acquire in the first place. Keep it simple, position the lights in good spots, get a good meter reading and you will be able to just fire away all night.

Equipment Used

Roberto talks about composition and gives the following guidelines:

• Choose a selective focusing technique
• Placement and composition of your main subject
• Use converging lines
• Use repetitive elements
• Use Framing techniques

http://www.robertovalenzuelaphotography.com or follow Roberto on twitter at http://twitter.com/robertophoto

Roberto also mentioned the Magic Lantern Guides Camera Books that help your learn your camera and what the controls do.

Show Host

Kerry Garrison
http://kerrygarrison.com Twitter Facebook FriendFeed

This podcast is also available on iTunes.

Similar Articles

• Understanding Exposure with the Exposure Triangle
• Photography Basics: Beginners Guide to Aperture
• Photography Basics: Controlling Exposure
• How to Calculate Depth of Field

How to get the lighting we want

By now we would hope you wouldn’t be asking how to get your lighting setup dialed in, but if you need a little refresher you should start off with the following articles:

• Lighting ratios for portraits
• Using a Light Meter for Proper Exposure
• Understanding Light Stops

For the rest of the article, different images will also be presented with lighting diagrams to help illustrate exactly how each look was obtained.

Broad Lighting

Broad lighting is certainly the easiest lighting style to use since the camera side of the face is lit brighter than the far side of the face. This look is easily obtained by simply bouncing your flash off a wall or reflector to the side of the camera back onto the subject. Broad lighting used to be taught as the “feminine lighting” but that is certainly not always the case.  Broad lighting will tend to make a face look wider which is not always a look that is the most flattering. With the right subject, broad lighting can certainly achieve very nice results.

With the subject facing to the camera right and a large light source to the camera left a broad light effect is created putting the side of the face furthest from the camera into shadow. With the tilt of her head it gave her face a more rounded appearance.

Short Lighting

Short lighting is considered by many to be the most flattering style and is certainly my personal favorite. Short lighting will tend to make a face look thinner. Short lighting is also harder to achieve because it virtually requires off-camera lighting since the light is coming from behind the subject.

With the shadow on the camera side of the face, the face looks thinner. Keep in mind, the examples so far have been achieved on the same location spot using only natural light and simply moving the subject and camera position to get the desired look.

Split Lighting

Split lighting is not very popular and is probably the least used of the different lighting styles. In split lighting the light is split down the middle of the subject’s face dividing it in half. The lighting setup is fairly simple with two lights on either side of the subject and one using less power than the other. I personally really like the split lighting effect to give someone some images that will have a different look than they are likely to get from other photographers.

As you can see, split lighting can be very effective and with just a slight turn of the head can look like a mix of split lighting and short lighting,

Summary

I hope this has given you a new set of tools to use to improve your portrait lighting techniques, done properly you can achieve a very classic, timeless look that your clients will love. The key to mastering any of these is to practice, practice, practice. Get some lights setup for one style, maybe get a model from a place like Model Mayhem, and work on each style until you really have it nailed down. Next time we will look at Rembrandt and Butterfly lighting.

Later, the guys discuss the use of a light meter and how it can help you get your exposures fast and accurately in-camera and save you time in post-production.

Show Hosts

Kerry Garrison
http://kerrygarrison.com
Twitter: http://twitter.com/kerrygarrison Facebook: http://www.facebook.com/profile.php?id=822369545

David Esquire
http://esquirephotography.com
Twitter: http://twitter.com/esquirephoto Facebook: http://www.facebook.com/profile.php?id=636655600

This podcast is also available on iTunes.

That Cheatin’ Histogram

Let’s look at what happens when we take a picture with our DSLRs. The exposure meter in the camera is using reflective light instead of incident light so a man’s tux will show a different meter reading than a bride’s dress even if the exposure for both of them was correct since the white dress will reflect more light than the tux, thus throwing the exposure meter out of whack. Secondly, when we press the shutter the camera creates a JPEG image with all of your picture settings and an S-Curve applied. Yes, this happens even if you are shooting in RAW mode since the display on the LCD is actually the JPEG image which is also the image the camera uses to calculate the histogram. I can’t count the times that my exposure meter was dead center, the preview looked great, and the histogram was good but when I brought up the RAW image in Lightroom, the image wasn’t quite exposed as well as I expected. Anyone who shoots a lot can attest to this issue. Yes, your LCD and histogram are usually accurate enough, but if you want to be accurate all the time then you need a reading from the point of few of the subject by measuring the actual amount of light hitting the subject and not the amount of light reflected by the subject.

What does a light meter tell you?

I asked a handful of photographers who had never used a light meter what they thought a light meter would tell them and surprisingly few actually knew even the basic functions of all light meters did with “Measure the light I guess” being the top answer. Even the most basic of light meters will allow you to set the ISO speed you want to use, then you set the shutter speed or aperture to what you want to use and the meter will give you the correct settings for a proper exposure. More fancy ones can also fire your flash equipment and some will even calculate the amount of flash versus ambient light.

Let’s say we have a nice bright sunny day and we set our ISO to 200, and our aperture to f/16, if we take a reading we will probably get something like 1/200th of a second as our shutter speed for a good exposure. With most digital light meters you can then make adjustments to the shutter or aperture and it will change the values on the screen to tell you what to change the other setting to.

If you aren’t familiar with the relationship between ISO, Shutter Speed, and Aperture, you should read the article we have about it (Link: The Exposure Triangle).

Testing the theory

Ok, I am sure many of you are skeptical that your camera, even a high end pro-series camera isn’t going to be dead-nuts accurate, but let’s take a few tests and see what our camera is telling us.

The following is a series of images of a product that has a black front and a light top, not something a camera’s meter is going to be good at so it will help illustrate the point well. Simply adjusting the camera’s settings to center the camera’s exposure meter at ISO 200, f/5.6 the camera gave us a setting of 1/400th shutter speed. Shooting the gray side of a WhiBal card it changed to 1/400th of a second, and shooting the gray/white/black side we got a setting of 1/640th of a second. By doing this test we can see that the camera’s exposure meter is going to change based on how reflective the subject is. In each image you can also see Photoshop’s histogram to see where the image’s exposure actually came in at.

Image 1 – ISO 200 f/5.6 1/400th – Slightly Underexposed (Based on WhiBal Gray)

Image 2 – ISO 200 f/5.6 1/640th – Underexposed (based on WhiBal White/Black/Gray)

Image 3 – ISO 200 f/5.6 1/200th – Showing good exposure (based on light meter)

Now some people may say that a perfect exposure should be centered in the histogram, however, digital sensors retain more detail in the highlights than they do in the shadows so you actually want your highlights to be fairly far to the right without going into the last little bit of the histogram which is exactly what we got with the final image.

But how does the meter know what the background is?

One of the most commonly asked questions is how does the meter know what the background of the subject is, since that should affect the exposure right? Well, let’s just try some experiments and see what we get. The following images were taken using the exposure settings provided by the light meter which were identical for both images, take a close look at the histogram for each image.

ISO 400 f/4.0 1/125th – Properly Exposed yet histogram says its underexposed

ISO 400 f/4.0 1/125th – Properly Exposed yet histogram says its overexposed

Of course the white paper is providing some bounce light that is providing more details around the edges and since I only metered for the center of center of the phone. So yes, the background can affect the exposure because you may not be metering for any reflected light, although this is typically only a problem with a situation like this. If I wanted to expose for the edges, then I could have metered at the edges. Does this mean the background affected the exposure? Yes, but only because the background in this situation actually is acting as a light source that is reflecting light into the edges around the product.

Will a light meter work properly in every situation?

So far we have looked at using a light meter for incident lighting, where this can break down is with highly reflective surfaces or in situation where the lighting is uneven, in this case a reflective meter is going to be more accurate. Most all light meters can do both types by adjusting or moving the light sensor dome. In reflective mode, the meter is going to act just like the meter on the camera.

Like anything else, a light meter is just another tool that is designed for a specific purpose. Used properly, it can dramatically improve your exposures and you camera setup time. The following image was taken in bright daylight with a large diffuser to the camera right and a large beauty dish flash to camera left. Combined with the ambient light, that is three different light values. With the light meter getting a reading taken at the subjects face, and the meter facing the camera, the settings provided were certainly dead on.

Model: Taylor Thorne

Ok, I want one, what do I do?

Light meters, especially used ones can be had for pretty reasonable prices. I see meters like the Sekonic L-358, which is a pretty nice meter with lots of functionality, often sell for $150-$200 on Craigslist. Cheaper models with less features, but still fully capable can be had for as little as $50-$60.

Model: Taylor Thorne

SpyderCUBE by Datacolor

Once in a while a product comes along that is so clever, so right, it is just a “must have” product.  While at PMA, I stumbled on such a product.  The SpyderCUBE by Datacolor is one of those products.  Nothing it does is really new, but it does everything right, in a small package, with more features than most any competitive product on the market.  For me personally, this gadget has single-handedly obsoleted my gray cards, ExpoDisc and most all other white balance devices I have seen.

Overview

First, this is an ABS plastic/resin cube with a tripod mount on the bottom stem and a metallic ball on the top.  By putting this object in a photo you shoot, you get a whole slew of exposure, white balance, specular highlight, black level, absolute black, neutral gray and white readings in light from multiple directions, all in one place from a single tool.

Features

It’s not a complexly built product, but it is a lot more sophisticated than a piece of gray cardboard that gets bent up in the pouch of your camera bag.  Each and every feature and surface of the device has a specific purpose.  If you use Aperture or Lightroom, taking advantage of this tool is quick and easy.

Specifications

Usage

I have used this product in a couple of tests so far with my Canon 5D Mark II, and the results are both amazing and as expected.  At the beginning of my shoot, I put this SpyderCUBE (attached to a flexible tripod) on a flat surface somewhere in the shoot.  I take an initial shot with it in the photo.  Once I get into Lightroom, I use the eyedropper to set my white balance setting for the room, and then apply that setting across the rest of the photos that I shot in that scene.

Another possibility is to use the cube in a photo to set the on-camera custom white balance.  If you get the cube to take up a a good bit of the image, the camera can set white balance right from it.

Results

Original Auto White Balance Canon 5DII

So, here are some tests that I did to see how well this works.  Follow along with me.

First, I grabbed my Canon 5D Mark II with a 16-35MM F2.8L lens and set white balance to auto white balance (AWB), walked out my back door, sat the SpyderCUBE with a mini-tripod onto a crate of travertine on my back patio.  There is some white Styrofoam and fairly white stone there in the shot, so I figured it would get a pretty decent white balance with the auto setting on my camera.  As you can see, the photo isn’t too bad for color (click it to enlarge).  The camera calculated the white balance at 4500ºK.

Lightroom's eyedropper tool

I then brought the image into Adobe LightRoom to do a little light balance work there.  In the develop mode of lightroom, there is a small eyedropper you can select and use to point to a neutral gray on the image.  This is what the SpyderCUBE is all about… giving you that perfect neutral gray in both direct light and indirect light.  You can see from the image to the right that the Lightroom eyedropper gives a pattern of pixel colors around where you are about to click, as well as the RGB value of the pixel you are hovering over.

Lightroom Corrected - 5000ºK

Once you click the mouse, Lightroom immediately re-calculates the white balance for the scene and changes the white balance setting to the new calculation.  In this case, that setting is 500ºK warmer, or 5000ºK.  If I had just shot a whole series of photos in this scene, I would now apply the new white balance setting to all of the images in the series to get the color correct on all of them.  This one step alone can save many of us from manually tweaking the color settings in our images, but shooting outdoors is not typically a hard situation to white balance.

Mixed lighting indoors + AWB

A scenario that is really hard for most cameras to auto white balance is a mixture of indoor light sources, including halogen, tungsten, fluorescent and ambient light from windows.  I am sure that many of you have had this situation where you shoot an indoor scene with AWB set and what you get is an orange cast image that is just completely wrong as your camera’s auto white balance just cannot figure out the lighting.  So, I have set up that exact situation with the modeling lights from my strobes through soft boxes and halogen overhead lights, plus mid-day sunlight coming in through the windows.  This shot is a mess!  And it is so typical of using the AWB setting on so many cameras when shooting indoors.

Camera AWB reading

Looking at the settings in Lightroom, this image was read as a color temperture of 4050ºK.  The multiple light sources have thrown the camera for a loop.  But again, with the eyedropper and selecting the neutral gray, and this time you can see a much more dramatic change over the last example.

Corrected White Balance

The corrected image now has a color space of 2750ºK, which is 1300ºK different than the original calculations by the camera.  And look how obvious that difference is! As a matter of fact, I could not find a single situation where the color wasn’t ever so slightly off from my camera using the AWB setting.  That alone tells me that this SpyderCUBE needs to travel everywhere my camera travels.

Histogram as shot

This brings up another interesting tip with Lightroom and using the Histogram in the upper right corner.  Let’s take a look at the Histogram for this image (right).  Notice the triangles at the upper left and right of this image?  They actually serve a purpose.  They can tell you if your image has absolute blacks and whites in the range of the image.  Notice how both triangles are gray – the same color a the background of the Histogram?

No blue shows here

If you click on the triangle, it will highlight.  If you look at your image, it will now show blue wherever absolute black appears in the photo.  In this case, there really isn’t any absolute black to notice.  Even the hole in the bottom of the SpyderCUBE is not showing any blue.  But we can fix this.

Sliding the Histogram

Next, we roll our mouse pointer over the lower portion of the Histogram, and click.  A <|> symbol appears and we can now drag the histogram for the lower light portion of the image and move the black point.  As we slowly move it left, you will see the triangle turn blue just as the first pixels of absolute black appear on the screen.  Move it a touch more and it turns white.  When the triangle is gray, none of the image is at absolute black.  When it turns blue, the image is perfectly set with the darkest color in the photo at absolute black.  As you drag further and it turns white you are now clipping some of the darker colors in the image to black.  This is a powerful tool and tells us a lot about the luminance range of our image.

White point clipping

The upper end of the histogram serves the same purpose with the white point of the image.  When I click it, the specular highlight of the SpiderCUBE’s chrome ball reflects the brightest light source in the image and pixels begin to appear in red where the white point of the image begins to clip.  By adjusting this area of the histogram, we can fine tune the white point of the image and control the clipping at the brightest point we wish. You can also click both of the triangles and see the white and black clipping points in red and blue at the same time.

AWB shot for in camera WB

One last test was to see if I could set the camera’s custom white balance from just shooting the SpyderCUBE.  Using the same lighting setup as the studio shots above, I put the SpyderCUBE about 6″ away from my lens and shot it with AWB.  As you can see, the same white point issues.  This shot came out at around 4150ºK, which is pretty far off.  I then went into the menu on the camera and told it to set a custom white balance using this photo as a reference.  This was an interesting test as I made sure that there were other colors visible in the photo.

In-camera custom white balance

The camera re-set the white balance to 2900ºK.  I changed exposure slightly, took the SpyderCUBE out of the shot and re-took the photo with the new white balance setting, and as you can see… a huge improvement!  Once again, the SpyderCUBE has done its job.  even with all kinds of strange light combinations, it has saved the day and set the white balance properly.  From now on, this little baby goes wherever my camera goes.

The SpyderCUBE is available at B&H and Amazon for $59 as of the writing of this review.  Although it is a bit more than you will pay for a white balance card, and a little bulkier, there are some distinct advantages to having the extra features of this product… like specular highlight and absolute black.

The SpyderCUBE and a series of demonstration videos videos can be found at the Datacolor website.

Product Review Scorecard

*PHD Cameras – Acronym for “Push Here, Dummy”, meaning the world of simple point and click digital cameras.

Author: Maurice Naragon
Digital Creations
Website Development and Marketing
Professional Photography in Orange County, CA

It all adds up

If the visual references isn’t quite enough, then another way to think about it is to think of a perfect exposure as the combination of the right proportion of ingredients made up of ISO, Shutter Speed, and Aperture setting. If a perfect exposure = 9, and you have equal parts of Shutter, ISO, and Aperture, then you have a good mix (3+3+3 = 9). If you need to adjust one of the ingredients, then you have to adjust one of the others to come up with the same final number (2+4+3=9), subract from one, you have to add to another to make up the difference. If you have too much of one, without substracting from another, you end up with an overexposed image. Conversly, if you take away from one but don’t add another, you end up with an underexposed image.

The Sunny 16 Example

In a previous article we looked at the sunny 16 rule, this states that on a bright sunny day, a perfect exposure should be f/16, ISO 200, 1/200th of a second. (ISO and shutter are the reciprocal of each other). If we wanted a shallower depth of field and wanted a larger aperture like f/2.8, then since f/2.8 is 5 stops brighter than f/16, we would then need to compensate with either a lower ISO or a faster shutter. Increasing the shutter is the easiest in this example then we need 5 stops of shutter giving us a speed of 1/6400th of a second.

Low Light Adjustments

In low light we have the opposite issue, trying to get enough light into the camera. We only go so slow before we run into blurring issues with slow shutter speeds, and the aperture limit is going to be based on the lens we are using. If we still don’t have a bright enough exposure then we have to compensate by increasing the ISO speed.

Bringing it all together

While each setting can have an effect on the overall image quality, the sum of the three effect the overall exposure. For a refresher on the other settings, be sure and go back through these previous articles:

• Beginner’s Guide to Aperture
• Controlling Exposure
• The Sunny 16 Rule in Photography
• Capturing movement with shutter speed
• Understanding Depth of Field

Author: Kerry Garrison

“Hey Guys,

I got a question for ya. Sorry the answer to this might already be on your site somewhere but I’d just thought I would msg you instead. I was wondering if you had any suggestions for photography books either having to do w/ business or the technical side of things. I’ve read Professional Wedding Photography by damien lovegrove and am in the process of reading understanding exposure bryan peterson. I have fast track photography on order..

Maybe one to do w/ posing??? Its weird I study photography all day long everyday.. but when it comes down to being w/ the couple it’s like I forget everything I ever learned and freeze. Then i want to slap myself because I could have done this or this shot but was having a brief moment of anxiety. I suppose posing and things will come with practice and the more I do it but I really thought I would have the hang of it by now. Any suggestions? ”

Yes Heather, David and I both have a list of suggestions for you.

David’s Picks

• Jerry Ghionis’ Pic Pockets $80
  These are small reference cards that show a specific scene, then on the back it goes into detail as to how the shot was taken.
  https://www.theicesociety.com/?page=72
• Bambi Cantrell’s Cue Cards $100
  These are stacks of cards demonstrating different poses and ideas to give you recommendations for setups.
  http://cantrellportrait.com/extra/online_store.php
• John Mireles Look Book $75
  More like a paint swatch sampler, the look book contains a wide variety of common poses to help you from getting into a rut or just for inspiration if you need some.
  http://photographerstoolkit.com/lookbook

Kerry’s Picks

• Photographing People – Rotovision $26.00
  Excellent book on posing and lighting setups and each shot includes a 3D drawing showing exactly how the set was designed with the placement of lighting, subject, reflectors, camera, etc.
  Photographing People: Portraits, Fashion, Glamour
• Posing for Portrait Photography: A Head-to-Toe Guide by Jeff Smith – $21
  This is  great book that goes through the correct placement of each section of the body from head to toe with plenty of example images to help make the point.
  Posing for Portrait Photography
• Professional Portrait Posing: Techniques and Images from Master Photographers by Michelle Perkins $23.72
  This book goes through the particular styles of a handful of professional photographers to show their distinct styles for posing and lighting subjects.
  Professional Portrait Posing: Techniques and Images
• The Moment it Clicks – Joe McNally $39.59
  Joe is a master of lighting and this book, while designed as a book on lighting, uses almost exclusively human subjects so it also is an excellent book for posing.
  The Moment it Clicks

What is a RAW image?

By RAW, I mean an image that is shot with your camera image quality set to RAW mode which stores the actual sensor data for the scene that was shot. This is different than a JPEG image that is a rendered image of the RAW data that has different effects applied to it by the camera such as sharpening, saturation, and contrast. A good quality JPEG image can look incredibly good and can be printed at large sizes and will look great. A RAW image will need some form of software program to convert the RAW data to something usable. The most popular programs for this today are Lightroom, Photoshop, Aperture, Capture One (Nikon), and Digital Photo Professional (Canon).

Is there a technical difference?

Anyone that tries to tell you there is no difference in image quality between a RAW image and a JPEG is simply mistaken or ill-informed. From a purely technical perspective, a RAW image will always give you a better image. A RAW image simply has more data, for each pixel there is at least twice as much data on older cameras like my 30D and as much as eight times as much data with newer cameras that have more bit depth. This means that a RAW image has the ability to have a greater tonal range than a JPEG. A RAW image will also then have greater latitude than a JPEG image, giving you the ability to process the image to recover shadows and highlights more than you can if you started with the JPEG. Since white balance settings are applied when an image is saved as a JPEG, shooting in RAW will allow you to adjust the white balance during post processing without sacrificing any image data.

This is not an opinion, it is a pure technical fact. So let’s accept that this is true and that RAW has a distinct technical advantage over a JPEG saved from the camera. I don’t think we need to debate that RAW has an inherent technical advantage and I think some people get caught up in this. I think the real issue is whether or not you need the advantages of RAW versus the negative reasons for using RAW that we will look at later.

Getting down with the downside of RAW

The big debate over RAW vs JPEG is whether or not the pros outweigh the cons so let’s look at the cons and see what the downside of using RAW images is:

• Increased file size
  This is probably the biggest issue there is. RAW images are considerably larger files than their corresponding JPEG images. With my 30D, a RAW file will typically be around 5mb while a fine quality JPEG will be around 1.5mb. As the megapixel count goes up, the files get downright huge with RAW images from a new Canon 5D MkII being around 22mb each. If you are shooting lots of images, at a wedding for example, then the larger size of RAW files will be a significant hit. Since the files are larger, they will require more horsepower from your computer to process. For the same number of images, you will need more flash card storage.
• Specialized software needed to process
  If you can call Photoshop, Lightroom, or Aperture specialized software, then yes, you will need something like this or use the software that came with your camera. If you use something other than these programs then you may have issues dealing with RAW files. For a brand new camera, you may have to wait for updated versions of these programs before they can recognize your files. This also means that if your camera is discontinued in the future, there is no guarantee that your camera’s format will always be supported (this is a good reason to use DNG files, but that’s for another article).
• RAW workflow is different than a JPEG workflow
  Is it? If you are already using Aperture, Lightroom, or Adobe Bridge for processing JPEG’s, then there is little to no change in your workflow. Two years ago, before tools like Lightroom and Aperture, working with RAW images was such a pain that RAW was said to mean “really awful workflow”. Since many of us are using Lightroom and Aperture now, there is little to no changes at all for working with RAW files other than they take longer per image to download off a CF card.
• RAW images in third party tools don’t look as good as the JPEGs
  This has been a real serious problem for a while as only the camera manufacturers really have the secret sauce for decoding their RAW images properly. Adobe has pretty much solved this issue with Lightroom 2.2 and the inclusion of camera profiles that setup the RAW processor to match the settings used to create the JPEG images in your camera.

Again, we are looking at facts here and not opinions, but it is important to understand that there is a downside to using RAW files even if I personally feel that the negatives are typically blown a bit out of proportion with the exception of the increased file size which can be a really significant issue for heavy shooters.

The non-destructive workflow

One of the biggest advantages of shooting RAW is that it inherently provides you today with a non-destructive workflow. What it means is that there is no image degradation between saves and any given step in the editing process can be removed. If we are using any of the three most popular tools today (Photoshop, Aperture, or Lightroom) then when we edit a JPEG, and make our changes, those changes are permenant, and because we just re-saved our image as a JPEG some compression has occured, every time we do this we lose some image quality. Sure you can make multiple copies along the way so you can go back to previous versions, but that negates the whole point of JPEG’s saving disk space. I personally work in Lightroom and I can take my RAW images and apply as many edits to them as I want but these changes are simply stored as a set of instructions to Lightroom, thus the original image is never modified. This also allows me to make virtual copies of an image so I can have a color, B&W, Sepia, or dozens of different versions of an image and take up only a trivial amount of disk space since it is only storing the steps to make the changes and isnt storing a new copy of the image itself and again, no matter what I do, there is no image quality lost at all during the post-production process.

Is anyone still using JPEG these days?

If nobody was shooting JPEG anymore than I wouldn’t have so many questions about it but are any real professionals shooting JPEG and the answer is yes.

Carlos Baez is a wedding photographer from Florida, this is someone who makes his living delivering top quality images to high paying clients and yet Carlos shoots JPEG because he can consistently deliver great images without the extra overhead of RAW files. Carlos is an expert at lighting and understanding exposure so he doesn’t rely on post processing to get his images right.

Ken Rockwell is a huge advocate for shooting in JPEG mostly because a lot of people use it as an excuse to not get the image right in camera. Although he has an article about this (http://www.kenrockwell.com/tech/raw.htm). I have posted a link to his article because he does make a few valid points but I think he does go over the top a little on some of the negatives while I do agree that many people use RAW without either knowing why or using it to correct their mistakes from not knowing how to use their camera properly.

Pros against JPEG

It’s only fair that I point out a few pros who have made the switch to RAW and some of their reasons for doing so.

Scarlett Lillian from Florida has been shooting RAW since she started shooting weddings but then tried going to JPEF to save disk and CF card space. After really giving it a try, she finally switched back to RAW because she felt she just wasn’t getting the color and skin tones from the JPEG files that she was when she was using RAW. She uses Photoshop with Bridge as her workflow tool.

David Ziser is, without a doubt, one of the biggest names in wedding photography and recent convert to the RAW side. David’s big switch came when he started using Lightroom for his workflow and then discovered that the images he was getting with Lightroom and RAW files simply gave him a better image than starting with JPEG. David details his experience in a post on his site, although he also make a case for use JPEG for less critical shots that will never be printed at larger than 5×7. Anything destined for the album or enlargements he suggests shooting in RAW and the filler shots can safely be shot in JPEG to conserve space.

Rick Miller who is a Senior Solutions Engineer at Adobe does a segment when he is demoing Lightroom where he shows a picture of his girlfriends dog that is a white curly haired dog. Rick took a picture of the dog that when the rest of the scene is properly exposed, the dog is overexposed. Saved as a JPEG, the details in the dogs fur are completely lost and unrecoverable. The same image shot in RAW is able to use tools like recovery and exposure control to regain all of the detail in the dog’s fur. This demonstrates how even a shot that is technically correct for the rest of the scene may still suffer from being shot in JPEG.

RAW or JPEG – Which is for you?

Since I am far more likely to forget to change my camera from JPEG back to RAW when I need to, I simply leave it on RAW and take the disk space penalty. With a large wedding costing me around 10-12gb of space, it isn’t that big of an issue. If I upgrade this year to a 50D or 5D MkII and I move to having 30-40gb of space per wedding, I may have to rethink this strategy. What I like about shooting RAW for weddings is that in the thick of things, if you do make a small error in exposure or white balance, it is far easier to correct it afterwards. I don’t use this as a crunch, but it is a safety net.

To decide If you should stick with JPEG all you need to do is to take a close look at your images and compare them with what you can get from a product like Lightroom and then decide if your images are good enough or if any improvements that you get from using the RAW image are noticeable and worthwhile.

What do some other photographers say?

Mark Teskey “RAW only. Shooting JPEG is like working without backing up files or a second body/flash. There’s no safety net with JPEG.”

JE Images “RAW all the way. if I need to tweak anything then I have full access to all the info..”

Denise Clay “[I shoot] RAW – I used the best film I could that matched the job in film days, why not do the same now with the best digital file?”

MrsBoesch “I shoot JPG. It takes up less space on my hard drive, and I am of the opinion that you should try to “get it right” the 1st time”

So what are you to make of this?

There is certainly a case to be made that higher quality final images can be made from using RAW files and that shooting in RAW provides a technical safety net (even if you dont need it because you are wicked good). The main issues of working with RAW for me are the non-destructive workflow and the ability to have multiple virtual copies of an image without eating up more disk space. I do believe that almost all of the main complaints about RAW have been more than satisfied with current software leaving the issue of disk space and storage being the only real issue, albeit a signifigant issue for some people.

In the end, the only thing that matters is that you are happy with the images that you are delivering and if you are shooting for clients, that they are happy with the images you are delivering. If you are shooting in JPEG and are happy with your images and you see no compelling reason to switch, then don’t. If someone like Carlos Baez can shoot a wedding in JPEG and he makes a LOT more per wedding than I do, I am not going to tell him he is wrong for shooting in JPEG. On the flip side, if you are shooting in RAW and the disk space is killing you and you are good enough that your images require basically no tweaks for color, white balance, exposure, fill light, highlight recovery, or saturation, then you may be a good candidate for shooting in JPEG. It all comes down to a personal choice. There is no right or wrong answer to this debate, its just a question of what works for you in order for you to deliver the best quality images to your clients.

Author: Kerry Garrison

Getting the Camera

Since I am not sponsored by Canon (any help here would be appreciated – wink wink) and I haven’t been able to justify the cost yet, I decided that another way to get one for a little while was to call up the good folks over at BorrowLenses.com. I hooked up with Max to get a weekend rental on the 5D Mk II so I could use it on a wedding shoot I had planned as well as to play around with the other features. If you have never rented equipment, you can’t go wrong by using BorrowLenses.com as their prices are great and you don’t get slapped with a huge deposit (no deposit in fact), but more about BorrowLenses.com in an upcoming article as I review their service.

I got the camera and couldn’t wait to slap in a card and start playing with it.

First Impressions

When picking up the body the first thing you notice is the surface has a much better texture on it than previous cameras making it easier to hold. The form factor is much like the 30D/40D/50D/5D. For users of those mentioned cameras, the control layout will be very familiar with the only noticeable exceptions being that the delete button has shifted due to the large screen and the top LCD illumination button has been moved to the right side of the display. For people moving up from a 30D/40D you will notice the lack of a pop-up flash and no preset modes on the mode dial (this is much more of a Pro camera than a consumer camera after all).

The large LCD on the back is just stunning with its much higher resolution display which enables you to better see if an image is sharp and in focus.

The new menu system is super clean and sharp looking on the big display although a little hunting around the first few times to find some of the features will be in order. The only thing that threw me for a loop for a minute was figuring out how to setup exposure bracketing. Not wanting to turn to the manual, I figured it out quickly enough. What I did have to crack the manual for was to figure out how to  use the video mode. Simple enough, go into Live View mode and press the Set button in the middle of the large dial on the back to start/stop recording.

First time setup

Before really being able to push the 5d Mk II to it’s limits, you will need to go into the menus and setup a few options first. Here are the things I did to get it ready for my tests.

C. Fn I : Exposure
Custom Function 3 changed to 1 to enable ISO expansion. This is needed to shoot at ISO ranges above 6400.

C. Fn II : Image
Custom Function 3 changed to 1 to enable Highlight Tone Priority. This enables Highlight Tone Priority which can help from overexposing important aspects of your image. Note however that when this is enabled, you will not be able to go over ISO 6400 regardless of the previous setting.

C. Fn III : Autofocus/Drive
Custom Function 3 changed to 1 to enable Multi-controller direct. This option enables you to select the autofocus point by using the multi-controller (mini joystick).

Live View Function Settings
LV Func. Setting set to Stills+movie, Screen Settings set to movie display

Image Quality
Image quality was set to RAW.

Finally, I made sure the date and time was correct, dropped in a compact flash card, formatted it and I was ready to go.

Shooting the 5D Mk II

Like many people getting the 5D Mark II, I have been shooting APS-C sized sensors for the past few years as I use a 30D as a primary and a 20D as a backup. Functionally, the 5D Mk II is virtually identical in how to operate the camera although the shutter sound is different and quieter. The big difference comes into play when using the same lenses you were using on the smaller sensor. If you aren’t familiar with this phenomenon, the smaller sensors in the 20D/30D/40D/50D are smaller APS-C size sensors versus the full frame sensor in the 5d Mk II. The smaller sensor size introduces an effect referred to as a zoom factor (also known as crop factor) which, in essence, magnifies the focal length of your lenses by 1.6.  To put it into simple terms, subjects on an APS-C sized sensor will appear closer (as if zoomed in by 1.6x) and the same lens on the 5D will give you an wider field of view. If we take a 50mm lens and put it on a camera with an APS-C sensor, what we get is basically an 80mm lens. A 70-200mm on the 50D becomes a 112-320mm lens on the APS-C sensor. This is interesting to note that a telephoto lens will get you more reach on a smaller sensor but you lose width at the smaller focal lengths. With my typical lenses, I now have to move closer to the subject to get the same effect as before, but I now have the added bonus of wide angle lenses being wider than before.

Image shot with 50mm on 30D (APS-C)

Image shot with 50mm on 5D Mk II (Full Frame)

Ok, so how about this ISO stuff, how good is it really? Yeah, well, its pretty damned good. On my 30D, it pained me to go up to 1600 ISO, on a 40D, 1600 would give you a very usable image but 3200 got to be a bit much, on the 5D Mk II, 3200 is a no-brainer and 6400 will give you very usable images. Moving up into 12,800 gets to be noisy but should be usable with a good noise reduction software while 25,600 ISO is basically unusable unless you convert the image to black and white and then you will get something looking like an older newspaper image.

Comparison of ISO settings from 5D Mk II

A feature that first appeared on the 40D is Highlight Tone Priority which can be a saving grace in numerous situations. Instead of going into how great this feature is, please refer to David Ziser’s post about Highlight Tone Priority.

What’s missing from the 5d Mk II?

Yes, the 5d Mk II is a huge leap forward for Canon, so much so that some shooters with the higher end 1Ds Mk III are actually “downgrading” to the 5D to get the improved sensor cleaning and higher ISO performance. But surely the 5D Mk II is not the Holy Grail of cameras, something must be missing right? Well, of course, otherwise it would be an $8000 camera. So what is it that we don’t have on the 5D Mk II that it’s big brother has?

• Dual memory card slots
  Many people think this is a major disappointment that the 5D wasn’t outfitted with dual memory slots to provide real-time redundancy when shooting.
• Built in battery grip/portrait grip
  The original 5D didn’t have one, and the 5D Mk II is aimed at the high end Pro-sumer market, not the professional market so this is an option. Unfortunately, the 5D Mk II uses a redesigned grip so existing ones will not work.
• Long life shutter
  The big gun 1Ds Mk III is rated as about double the shutter activations as the 5D Mk II (150,000 (5D) vs 300,000 (1Ds)).
• Dual Digic processors
  While the 5D Mk II does have the newer Digic IV processor, the 1Ds Mk III has dual processors for faster image processing.1

Granted, the higher ISO performance, larger, higher resolution LCD screen, improved dust reduction, 21 megapixel , full frame sensor, full HD video, and significantly cheaper price does make for a very compelling camera.

Focusing on Video

Yeah, the 5D Mk II is the Grand Poobah of DSLR’s that can shoot video with its full 1080p video capture. Being able to use all of the lenses at your disposal to shoot video is quite awesome indeed to achieve the same shallow depth of field that you can get in stills. So look out Sony, your days of being a video camera manufacturer have come to an end and the 5D Mk II is taking its rightful place of the King of all things video…..well….not exactly.

There is no question you can get stunning HiDef video out of the camera, there are plenty of examples online. But let’s look at the reality of shooting video with the 5D Mk II.

First off, abandon all hope of using autofocus when shooting video. If you are using the on-board microphone, you will hear constant whirrrr whirrrrrrrr whirrrrrrrr as the contrast-based autofocus “attempts” to focus. In some situations it may do alright, but the majority of the time you will end up with lots of times where the camera is trying to focus but tracks back and forth a few times before locking on. You really need to consider the camera as a manual focus camera when shooting video. Use autofocus in still mode to get your focus, then switch to video mode with autofocus off for best results. As for the built-in microphone (located just underneath the 5D logo), its alright for playing around, but anything serious will require an external mic plugged into the microphone jack on the side of the camera.

5D Mk II LowRez Video from Kerry Garrison on Vimeo.

Sample HiDef Video from 5D Mk II from Kerry Garrison on Vimeo.

Megapixels = Mega Storage

Oh sure, we all SAY we want more megapixels, but you really have to think of the ramifications of that. Here is a comparison of the same image taken with several of the different available image quality settings:

This means that a RAW file from the 5D Mk II is 4 times larger than a RAW from a 30D and even the 5D Mk II’s Fine JPEG is 2mb larger than the RAW file on the 30D. That’s 1/4 of the number of images I can fit on the same memory card and a typical wedding shoot for me will balloon from 10gb to 40gb. Add to that the additional disk space required to hold the images, and the addition computer horsepower (CPU and RAM) needed to process these huge files and you need some seriously beefy hardware to use this camera to its full potential.

For best results, UDMA Compact Flash cards are recommended, using these will speed up write times to the disc. Keep all of these things in mind if considering moving up to the 5D Mk II as it could turn out to be a bigger investment than just the camera itself.

Using the 5D Mk II

The first project I had was a small wedding reception, shooting out on a golf course at 11am presented some really harsh lighting conditions, the highlight tone priority system did a great job at keeping the subjects from getting blown out. One thing that I noticed was that the autofocus was really fast and super accurate. This is compared to the 30D that I normally shoot with. Normally I will get a handful of out of focus shots for no apparent reason, of almost 500 shots, there were only two that were out of focus, a significant improvement in the autofocus system over my camera.

The shutter noise is fairly quiet and doesn’t draw attention which is nice for quiet ceremonies and for catching candids without disturbing anyone.

For all your Shamu fans out there, here are some shots from Sea World.

5D Mark II - 70mm 1/640 f/9 ISO 200 Mode: Program sRAW1

5D Mark II - 70mm 1/5000 f/8 ISO 200 Mode: Program sRAW1

5D Mark II - 70mm 1/500 f/8 ISO 200 Mode: Program sRAW1

5D Mark II - 24mm 1/25 f/6.3 ISO 400 Mode: Manual sRAW1

5D Mark II - 42mm 1/60 f/2.8 ISO 400 Mode: Manual sRAW1

Is the 5D Mk II Right For You?

I only had the 5D Mk II available to me for a few days but I am completely impressed with it from a technology point of view. One of it’s biggest selling points is also one of its biggest problems, and that is the size of the images. A typical wedding will take up 30gb of space and just a simple day at an amusement park could easily eat up 6gb.  The ability to use the smaller sRAW sizes is a plus, but its painful to have to limit the camera, something I think I could get over easily enough but it remains to be seen if it is too limiting for doing paid wedding shoots in the reduced file format sizes.

Unless you already have a beefy uber-computer and have more compact flash cards than pairs of underwear, then there are going to be some hidden costs of getting into the 5D Mk II. I am probably fairly typical (or at least not abnormal) in that I am currently shooting with a 30D and put together some numbers as what it would take for me to purchase and use the 5D Mk II, and this is not upgrading the CPU or RAM in my machine as it isn’t that terrible to work on images with what I have.

That’s well over $4,000 with tax and shipping and isn’t counting having another as a backup. I would certainly recommend the 5D Mk II to anyone who can afford one, but, for myself, I need to take a look at the 50D before deciding to save up for the 5D.

Author: Kerry Garrison

Rental Equipment by: http://BorrowLenses.com

While there are a number of other programs available to do HDR with, we are going to look at the three most common ones mentioned in most posts and blogs, these are:

• Adobe Photoshop CS4 – Merge to HDR Function
• Photomatix
• Enfuse

Photoshop CS4

To be completely fair, I am using the different HDR tools here with their default settings and am not doing any additional tweaking afterwards to make the images look better. That being said, the Photoshop result is certainly the worst of the batch. The dark areas are too dark, the bright areas are too bright and it just didn’t do anything to really impress me. I also cannot find any noticeable difference between Photoshop CS3 and Photoshop CS4 in the final output. Even though you could tweak this image in Photoshop, it would be quit a bit of work because you really need to darken the sky and brighten up the building and parking lot. There may be a particular type of image that Photoshop likes better, of perhaps it doesn’t like that the images covered a 4 stop range. If someone has some tips on working with the Photoshop HDR merge, please post them in the comments.

Photomatix

Photomatix is another commercial tool (http://www.hdrsoft.com) that many people consider to be the best HDR tool available. Comparing the images, the Photomatix output most certainly gave the most dynamic range, so much range that it is actually easy to get an image that doesn’t actually look natural. The way Photomatix works is a complete mystery as even in the overexposed image, you can’t see the detail in the windows and doorways of the building the way you can in this Photomatix output. From a “wow” perspective, it is most certainly the most vivid image and has an amazing amount of range, there is almost nothing in the image that is too bright or too dark. While this may be good for some images, if you are trying to replicate what you are seeing with your eye, this isn’t quite accurate. Is it stunning in it’s range? Absolutely, no question there, it wins hands down in that area.

Enfuse

Enfuse is a different type of tool that compares multiple images and chooses to keep the pixels it feels are the best exposed. Using Enfuse by itself can also be an exercise in frustration. To simply using Enfuse, I use LR/Enfuse from Timothy Armes (http://timothyarmes.com/lrenfuse.php) which integrates into Adobe Photoshop Lightroom. Using just the default settings, the result is an image that is much more natural and is truer to what you would see with your eye. A big advantage of using Enfuse (especially with LR/Enfuse) is that it is significantly faster than Photomatix, the downside is that you don’t get the amazing results that you can get from Photomatix. Enfuse is going to give you a far more natural look.

Summary

It’s not entirely clear if these is a real no-brainer choice between Photomatix and Enfuse as it is really dependant on what you are trying to accomplish with the final image. Photomatix can certainly deliver outstanding images that are virtually impossible to achieve any other way and can also create more natural looking results by toning down the resulting image making it a more versatile tool overall. Enfuse has its advantage in being fast and easy to use when integrated into Lightroom and will create very nice, natural looking results, and if that is your goal then sending a few bucks to Timothy for LR/Enfuse is well worth it. Personally, I have both installed and will choose when to use each tool based on what result I am looking for, and knowing the strengths and weaknesses of each option will make it easier for me to decide when to use which tool.

Author: Kerry Garrison

What is this aperture thingy anyway?

Inside each lens is a diaphragm that can open and close, the size of the opening at any given setting is what we refer to as the aperture setting. On our cameras we refer to specific size settings as f-stops such as f/2.8, f/5.6, f/11, etc. While the obvious value of adjusting the aperture is to control how much light enters the camera, there is a secret hidden world beneath the hood that we will need to get a grasp of as well, but let’s start at the basics first.

For a given ISO setting and shutter speed we can adjust the amount of light entering the camera by adjusting the aperture, a smaller diameter (higher f-stop value) will allow less light in, while a larger aperture (smaller f-stop number) will allow more light it. If we refer to the Sunny 16 rule, we know that on a bright sunny day, if we are using ISO 200 and a shutter speed of 1/200^th then we will get a good exposure at f/16. As the sun goes down and there is less light, we need to allow more light into the camera, we can do this by opening the aperture up (again, using a smaller number) to allow more light in. This sounds easy enough right?

Image showing relative sizes of aperture

If that is all there is to it, then this whole aperture thingy would be a piece of cake and life would be good. It is enough to get you going into how aperture plays a role in getting a good exposure, so it is certainly a lesson worth learning and understanding well.

Have you collimated your rays lately?

The opening of the diaphragm also will control cone angle of light coming into the camera and this is why adjusting the aperture can affect the depth of field. To see how this works use your thumb and pointer finger to make a big circle, with one eye closed look through that at a finger on your other hand held about 12″ away. This is going to simulate a large aperture, you will be able to focus on the finger but you will have far less focus on something across the room. Next, make the circle very small and look through it again (now simulating a small aperture), you will be able to focus on both your finger and something across the room equally well. The reason for this has to do with the angle of light coming into your eye, with the large circle, light is able to come in very straight which creates a shorter focal plane, with a smaller aperture opening the light comes in as a cone shape giving a longer focal plane. While this simple experiment has a very subtle effect (not everyone may even notice it working) in your camera it can have a dramatic effect on how your images look.

Factors that determine depth of field

There are three factors that will determine the amount of depth of field you will have in your image, and taking from a comment post from Photo Larry, this points out the different factors:

In a comment from an earlier post, Photo Larry provided this very simple guide:

• Distance from the subject (Close=shallow, Far=Deep)
• Focal Length (Short=Deep, Long=Shallow)
• Aperture (Small=Deep, Open=Shallow)

Aperture Setting
We have already covered this one, the larger the opening (smaller f-stop number) the shorter the depth of field will be.

Focal Length
The longer the focal length the shorter the depth of field will be. This is why you will get more blurring effect on telephoto lenses than you will with wide angle lenses. The most popular portrait lens is the 70-200 f /2.8 because as you back up from the subject and use the longer focal length with a large aperture the more the background will get blurred out.

Distance to Subject
The further you are away from the subject, the more depth of field you will have as well. This is much easier to see with a long telephoto lens, if you focus on something very close to you, much of the background will be blurry, as you focus on things further away less of the foreground and background will be blurry.

Two images with different aperture settings

Summary

Hopefully this will help you understand the basics of what your aperture setting can do for you and how to begin to use it to your advantage both in getting enough light into your camera and by being able to add some extra flair to your images using the depth of field.

Author: Kerry Garrison

With Extreme 24.5-Megapixel Resolution, Processed Image Files Exceeding 138 MB, Five Frame-per-Second Burst Speed and Nikon Core Technologies, the D3X Ushers in a New Level of Image Quality

MELVILLE, N.Y. (Nov. 30, 2008) - Nikon Inc. today announced the D3X, an FX-format digital SLR featuring extreme 24.5-megapixel resolution and superb low-noise capabilities, which provides professional photographers with commercial-quality image performance in a familiar and extraordinarily versatile D-SLR form factor. In conjunction with the groundbreaking Nikon FX-format D3, the D3X tops off a collection of flagship level, rugged, professional caliber digital single lens reflex cameras engineered to excel in all types of professional photographic disciplines from photojournalism and sideline sports, to commercial in-studio applications.

The foundation of the enhanced performance of the D3X is its FX-format, 24.5-megapixel (6048 x 4032) CMOS sensor providing commercial, high fashion, fine art and landscape photographers with the extreme resolution, dynamic range, color depth, detail and sharpness that clients demand. Whether creating catalogs, magazine covers, billboards or gallery prints, the large 5.49-micron pixel size and high signal to noise ratio produces vibrant images with breathtaking image fidelity while reducing lost highlights and shadows, and ensuring smoother tone reproduction with minimized noise. With full resolution shooting speeds of up to five frames-per-second (fps), and 14-bit files, that when processed are approximately 138 MB, the D3X offers today’s photographic artists an extreme level of performance and versatility ready for demanding assignments in the studio or on location.

“In 2007, the 12.1-megapixel FX-format D3 delivered groundbreaking digital SLR image quality, coupled with incomparable high ISO, low noise performance and high-speed handling. In doing so, the D3 broke photographic barriers, enabling photographers to work in ways never before possible,” said Edward Fasano, general manager for Marketing, SLR Systems Products at Nikon Inc. “Now, the new 24.5-megapixel FX-format D3X D-SLR provides the extreme resolution and high dynamic range capabilities needed to meet the extraordinary needs of photographic disciplines such as high fashion, commercial advertising and fine art. The D3X delivers this remarkable capability while fitting seamlessly within the Nikon system, taking full advantage of Nikon’s world-renowned collection of NIKKOR lenses and Speedlights.”

Image Quality Takes Center Stage
To re-emphasize the importance of image quality above all else, the D3X delivers an incredible level of digital SLR performance to provide photographers with extremely high resolution, exceptional dynamic range, phenomenal total gradation and outstanding color reproduction. Image files can be recorded as TIFF, JPEG or NEF (RAW) formats in either 12- or 14-bit compressed or uncompressed formats, and recorded to UDMA compatible CompactFlashâ„¢ cards for optimum speed. Photographers can save image files directly to the dual card slots as overflow, backup, or as separate file formats to different cards. Building on the D3X’s flexibility, users have the creative option to shoot in the 5:4 crop mode with 20.4-megapixel resolution, the ideal format for creating 8 x 10-inch portraits. While using DX-format lenses, faster continuous shooting of up to seven frames per second can be achieved at a resolution of 10.5 megapixels.

The exceptionally low noise of the D3X is essential to any professional commercial application, and it provides photographers with an ISO range of 100 to 1600, expandable to 50 (Lo-1) and 6400 (Hi-2). The ultra smooth tones and lack of grain at ISO 1600 as well as at low sensitivity settings result in smooth, natural skin tones and exacting detail that, before the D3X, required larger and far costlier studio-bound camera systems.

Advanced Technologies, Meticulously Executed
In a commercial setting or on location, imaging professionals need high performance in both speed and processing. The Nikon D3X can shoot at up to five fps at full resolution or up to seven fps in DX crop mode, allowing photographers to catch the split-second difference in a model’s expression or capture all of the action in a sequence. Just like the D3, the D3X achieves a start-up time of a mere 0.12 seconds and a shutter release time lag of 0.04 seconds.

The D3X’s speed, as well as high levels of performance, leverages Nikon core technologies including a newly enhanced EXPEED™ Image Processing System, specially designed for the D3X to provide superior image quality, faster processing speeds and lower power consumption. This advanced system is able to achieve extremely precise color reproduction for a broad spectrum of hues, in addition to vivid saturation and smooth gradation. What’s more, Nikon’s advanced noise processing function is engineered to minimize noise at all sensitivities and operate seamlessly without interfering with other image color parameters.

The D3X also features Nikon’s exclusive Scene Recognition System, which continuously analyzes information from the 1,005-pixel RGB light sensor, to further refine auto exposure, auto white balance and autofocus calculations. This results in flattering portraits and awe-inspiring landscapes that portray accurate color and fine details. Nikon’s exclusive 3D Color Matrix Metering II helps ensure accurate exposures, even in the most challenging lighting conditions. Instantly evaluating each scene before capture, input data from the system’s sensor is automatically referenced against an internal database of more than 30,000 images derived from actual photographs to calculate correct exposure values. Active D-Lighting, used in combination with 3D Matrix Metering II, helps to determines proper exposure, and creates realistic contrast while compensating for lost shadows and highlights. Prior to shooting, users can choose from Extra High, High, Normal, Low or Off settings, as well as an Auto mode.

Additionally, the D3X features Nikon’s exclusive Multi-CAM 3500FX focus module, with 51 AF points, 15 cross type sensors and 36 horizontal sensors that easily track and lock onto moving subjects, delivering the same fast and accurate AF performance that helped make the D3 immediately successful. Users can select any of the AF points, making it easy to consistently attain accurate focus right on a subject’s eyes, frame after frame. Additionally, three AF-area modes – Single point, Dynamic-area AF and Auto-area AF – are available to maximize the use of the 51 focus points by selecting the most suitable one to match subject conditions. AF is also available in one of two Live View modes optimized for the studio, including a phase detection handheld mode and a tripod mode. This feature allows the user to zoom in up to 27x on the LCD screen to ensure critical focus. While in Live View, the graphic indication of a virtual horizon is also available, making it easier than ever to confirm camera orientation.

To further ensure each photographer’s ability to balance their personal style, Nikon’s Picture Control System enables users to adjust their images to pre-set parameters such as Standard, Neutral, Vivid and Monochrome that apply tweaks to image sharpening, tone compensation, brightness, overall tone and saturation. Photographers have creative control over these image parameters with the use of up to nine available customizable presets.

Synchronizing Both Form and Function
Engineered for real-world functionality, the D3X retains a rugged shell with moisture, dust and shock resistance that has become a hallmark of flagship Nikon D-SLRs, while preserving the usability and ergonomics that allow the camera to remain an extension of the photographer’s vision. Attention to detail goes so far as to include a self-diagnostic shutter system that is tested to exceed 300,000 cycles for maximum durability and longevity. The camera’s body also maintains the resilient magnesium alloy construction and form factor of the D3, promoting consistent Nikon system synergy.

A bright and accurate viewfinder offers 100 percent coverage with 0.7x magnification. The body also houses Nikon’s acclaimed 3.0-inch super density LCD screen, now relied upon by so many photographers. The high-resolution 920,000-dot screen is viewable at wide angles up to 170 degrees, and will allow photographers to quickly zoom in to confirm critical focus. Users can also output the video signal to an external display via HDMI to allow client viewing. Thanks to incredibly efficient internal circuitry, the D3X can capture up to 4400* shots per single charge of the camera’s Lithium ion battery.

System Strength Withstands the Test of Time
The D3X is fully compatible with Nikon’s Creative Lighting System (CLS) to give photographers a mobile lighting solution that is easy to manage. To further enhance mobility, the D3X is compatible with Nikon’s GP-1 GPS receiver to gather information such as latitude, longitude, altitude and date of shooting. Photographers can easily shoot tethered via USB, or use the WT-4a wireless transmitter to send images wirelessly when speed and mobility are essential. D3X users will also enjoy the system strength of more than 50 genuine NIKKOR lenses that provide outstanding sharpness and high resolution across a broad range of focal lengths.

Price and Availability
The Nikon D3X will be available at Nikon Authorized Professional Dealers starting December 2008, and will be available for an estimated selling price of $7999.95.**

* Based on CIPA Standards
** Estimated selling price listed is only an estimate. Actual prices are set by dealers and are subject to change at any time.

• 21.1 Megapixel Full-frame CMOS sensor, 14-bit A/D conversion (16,384 colors/each of 3 primary color), wide range ISO setting of 100-6400 (expandable L: 50, H1: 12800 and H2: 25600).
• Full HD Video capture at 1920 x 1080 resolution for up to 4GB per clip with HDMI output for HD viewing of stills and video.
• Next generation DIGIC 4 Image Processor for faster processing of fine detail and color reproduction as well as reduced image noise.
• High performance with 3.9 fps continuous shooting, new shutter with a durability of 150,000 cycles and improved weather-resistant body.
• Live View Function for stills (Quick, Live and Face Detection AF modes) and video.
• 3.0-inch Clear View LCD (920,000 dots/VGA) monitor with anti-reflective and scratch-resistant coatings for improved viewing and smudge protection.
• Updated EOS Integrated Cleaning System specifically designed to work with a full-frame sensor.
• Compatible with over 60 Canon EF/EF-S lenses and most EOS System accessories.

The EOS 5D Mark II features a huge, full-frame sensor. A 21.1-megapixel CMOS sensor delivers images of up to 5616 x 3744 pixels. And since it is full-frame, all lenses will deliver the angle of view they would on a 35mm camera without a conversion factor. This comes in handy especially when shooting with wide-angle lenses. For the flexibility to shoot in even the most dimly lit situations, the EOS 5D Mark II offers Canon’s highest ISO sensitivity to date, ranging from 100-6400 (expandable to ISO L: 50, H1: 12800 and H2: 25600). Thanks to improved noise reduction technologies, images shot even at highest sensitivity will be remarkably smooth.

The Canon EOS 5D is slated to ship towards the end of November 2008 at an expected street price of US$2699 in the U.S.

First off you need to realize that studio flashes like the PhotoBasics StrobeLites are not automatic like the on-board or accessory flash on your camera. A studio light doesn’t know what you are trying to do and will not adjust itself for the camera settings you have dialed in. You also need a means of firing the lights off when you press the shutter, all that and more will be covered in this article.

Connecting the lights to your camera

PC Sync port on Canon 30D

The first thing we need to do is to connect the lights to your camera, for this we are going to need what is called a PC Sync port. On most Canon DSLR’s the PC Sync port is on the left side of the camera under a rubber flap. In the image here you can see the PC Sync port and the end of a PC Sync cable. In my typical setup I will have the main light plugged into the PC Sync port to fire it and the other lights will automatically fire at the same time because they have a built-in optical slave that will fire the flash when another flash is detected. Since this happens far faster then the mechanical shutter, the effect is that all of the lights fire at exactly the same. There is a limit of how fast the lights will sync to the camera but we will address that in a moment.

Weim Hot Shoe Adapter

If you are unlucky enough to not have a PC Sync port on your camera then you will need to purchase a hot shoe adapter. The recommended one is the Weim Hot Shoe Adapter which sells for about $50 at most places. This will got into your camera’s hot shoe (when an acessory flash plugs in) and has a PC Sync output port on it.

As I mentioned, the lights do have an optical slave so they will fire when another flash is used so you may think you can just use the flash that is built into your camera to fire off the big lights. While this will work to an extent, the problem is that unless you know how to adjust your flash’s output compensation, the flash is going to fire at a level that your camera expects will be correct for the given light, when the big lights fire along with the built-in flash, your subject will no be over-lit and the scene becomes overexposed.

Rear view of StrobeLite

The opposite end of the PC Sync cord plugs into the back of the light. In this image you can see the 1/8th inch mini plug port on the bottom right hand area of the strobe head. With the camera and the lights connected, you are all ready to take some amazing images right?

If ONLY it was that easy. Now actually comes the hard part, figuring out how to get the light set right for a proper exposure. Hang in there, it won’t hurt too much.

Getting the lighting right

Output Adjustment Dial

Nice, quality studio lights make your lighting easier right? I wish! In the last section I explained that your on-board or accessory flash will meter the scene and use the appropriate output for the exposure metering, not so with studio lights, at this point you are full manual.

On the flash will be an adjust dial to control the amount of light output. On the StrobeLites this goes from full power down to 1/4 power given you two stops of light output control. If you have a light meter and know how to use it, you have all the tools you need to get the shot right the first time. If you don’t have a light meter then you will need to continue reading.

Since I shoot with he same lights, in the same studio, with the same basic setup the vast majority of the time I know the basic light setup that will work without have to take too many test shots, I can usually get it dialed in within about three shots.  A key thing to note is that your meter in your camera is basically worthless at this point. You are going to want to shoot in manual mode otherwise the camera is going to try to adjust your settings for the metered light. In manual mode you have total control. So where should you start?

For most of my pictures I start with the following basic settings:

ISO: 200
f/Stop: 11
Shutter Speed: 1/200th second

In fact, those are the exact settings I used for the previous pictures in this article so far. Why these particular settings? For one, I like shooting at ISO 200, I like the results I get at that speed, f/11 is my normal aperture setting unless I am going for a particular depth of field effect. That leaves two ways to adjust the amount of light I need. I can either adjust the shutter speed or adjust the light output of the flash. You may think that you may want to go with a faster shutter speed to make sure you dont introduce any camera blur but in most cases you can’t shoot any faster than 1/200th or 1/250th depending on your lights/camera combination. With the PhotoBasics StrobeLites and a Canon 30D, I have never had an issue at 1/250th but I like the extra margin of safety of using 1/200th. Let’s take a look at what happens if you shoot faster.

Out of Sync Image

The image shown here was shot at 1/640th of a second, while this would be perfect safe if I was using the Canon 580 EX flash, the StrobeLites cannot sync with the camera at that speed so what happens is that the strobe went off too late causing the image to be partially cutoff by the closing of the shutter mechanism. Because of this issue we are limited to speeds of 1/200th or less so I usually will stick it at 1/200th and be done. That leaves adjust the light output higher if I need more light or using a lower output or a slower shutter speed if I need less light. Knowing that the only things I will need to adjust are my light output or shutter speed I have really reduced my possible settings from a handful down to basically one, and its either shutter speed or light output.

Since most of my shots are product shots, the lights are generally pretty close to the objects so I will start at a very low power output of the flash, if its too bright at the lowest setting and I am already at 1/200th of a second the only way to cut down on the light being captured is to move to a smaller aperture setting like f/22. If the light isn’t enough I can just reach up and dial in more light or use a slower shutter speed.

With a little practice and a handful of confidence, you will be getting your lighting dialed in within a few shots. Take your picture and then look at the histogram of the image on your LCD of your camera to double-check the exposure. If its too dark, bump up the light, if its clipped out, dial down the light. Nothing will beat just a bunch of practice with your own lights/camera/lenses/environment to get you familair with how your lighting setup will work the best and soon you too will be able to get it dialed in perfectly within just a few quick test shots.

Author: Kerry Garrison

Do I need to know this?
If you are always using your flash in automatic modes, you may never need to know much about guide numbers but in manual modes, if you don’t have a flash meter, understanding how guide numbers work can be a powerful tool in helping you to get your lighting setup faster. Many older flashes even have built-in guides to help you calculate the aperture setting for a given distance.

Using the guide number to determine aperture
At the end of this article is a link to an Excel preadsheet that will do much of the work for you as well as containing the guide numbers for a handful of popular flash heads. First off you should understand the math behind it and how to read the guide number information for your own equipment.

Some flash devices will simply have a single guide number value while others may have different numbers at different ranges and even ISO settings so you need to pay attention when reading the guide number. Let’s take a look at a typical flash setup. A Canon 580 EX II flash has a listed guide number of 191, if we divide the guide number by the distance in feet we should get a good estimate of the aperture to use. In this example we will use a distance to the subject of 30 feet.

Guide Number / Distance = Aperture
191/ 30 = 6.3

The closest aperture setting on my Canon 30D to that is f5.6 so that would be an appropriate aperture to use if I was using ISO 100. If I was using a higher ISO number then I could use a smaller aperture. The following chart shows the multiple factor for common ISO speeds:

ISO Multiplier Table
ISO 100: 1.0
ISO 200: 1.44
ISO 400: 2.07
ISO 800: 2.99
ISO 1600: 4.30
ISO 3200: 6.19

To expand on the previous calculation, we can add in the ISO to give us more aperture options. Using the same guide number and distance while adding the ISO, let’s see how this affects our aperture setting:

(Guide Number / Distance) * ISO Multiplier = Aperture
(191/ 30) * 1.0 = 6.3
(191/ 30) * 1.44 = 9.1
(191 / 30) * 2.07 = 13.1
(191 / 30) * 2.99 =19.0

The most common question now is how to determine the distance to your subject without measuring it with a tape. Most lenses will have a distance readout that will show you the distance to your subject once you focus on it. Just press your shutter half way down while aiming at the subject, take your finger off the shutter, and then look at the distance readout. We aren’t aiming at hyper-accuracy here since the aperture settings in your camera aren’t going to exactly match the calculations but we are trying to get as close as possible and avoid a lot of trial and error. Using this information you should be able to get your light dialed in much faster than just by guessing.

Determining Maximum Flash Distance
Using a similar method we can also determine the maximum distance your flash can be effective at, this is extremely useful when trying to determine if you can light up a person on a stage from the back of an auditorium for example. The calculation for this is the guide number divided by the f/stop, and again the ISO value can be used here as well. In this example we will use the guide number of a Canon 580 EX II (58) and an f/stop of 5.6.

(Guide Number / f/stop) * ISO = Max Distance
(191/ 5.6) * 1.0 = 34′
(191 / 5.6) * 1.44 = 49′
(191 / 5.6) * 2.07= 70′
(191 / 5.6) * 2.99 = 102′

Since the f/stop and the ISO determine how much light enters the camera, you see how using a larger aperture (lower number) and a higher ISO can really affect the range of your flash. Let’s compare the difference between f/5.6 and f/2.8 as an example:

GN 191@ f/5.6 100 ISO = 34′
GN 191 @ f/5.6 200 ISO = 49′

GN 191 @ f/2.8 100 ISO = 68′
GN 191 @ f/2.8 200 ISO = 98′

These calculations will help you determine if a long distance shot is even possible or if you need to bring in additional light. If you are too far from the subject for your light to be effective, you could place your light closer to the subject and fire it with a wireless trigger, this would allow you to shoot from a distance but get the desired light effect.

Summary
I know this can seem a little intimidating at first but understanding these concepts will help you get your lighting technique under control much faster and help make sure you can get the shots you want. You can even use the calculations to build a custom “cheat sheet” for your particular flash that can print out and keep as a handy reference. The spreadsheet that we have made available for you has both the f/stop and maximum distance calculators but has a second worksheet that will create the cheat sheet for you by simply changing the guide number on the first line to match your flash device’s output.

Calculation Spreadsheet [ Download ]

Author: Kerry Garrison