Tagged: power

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Using your flash’s guide number

If you have ever shopped for a flash or read a review, you may have noticed a section of the spec called the guide number or GN. While this value is a measurement of power that the flash has and allows you to compare flash models, is this number useful to you at all? In this article we dig into the guide number and see how we can use this number help us dial in our flash and camera settings using some math instead of just guessing and retrying until you get what you want.

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How to Calculate Depth of Field

A big stumbling block for many new camera users is how to figure out how much depth of field a particular image will have it in given the focal length of the lens, the aperture used and the distance to the subject. Trust me on this, trying to do the algebra to figure it out is not something most people want to try to do in their heads. In this article we will cover all of the math involved and then make it real easy with an Excel spreadsheet and some links to some free applications to help you out.

Canon Announces EOS Rebel T1i w/HD Video 3

Canon Announces EOS Rebel T1i w/HD Video

Canon’s new EOS Rebel T1i is packed with features, both refined and new. In addition to its admirable performance with an all-new 15.1 Megapixel Canon CMOS sensor, DIGIC 4 Image Processor, a 3.0-inch Clear View LCD with anti-reflective and scratch-resistant coating, and compatibility with the EOS System of lenses and Speedlites, the EOS Rebel T1i adds remarkable Full HD video capture at resolutions up to 1920 x 1080.

Review: Tronix Explorer XT Portable Power Source 4

Review: Tronix Explorer XT Portable Power Source

Studio strobes are expensive and when you need lots of light but when you want to use them on location somewhere you have to find electrical outlets and possibly use long unwieldy extensions cords. But what happens when there is no power available at all? Using a generator is not recommended unless you can find one with a true sine wave inverter and even then, the peak times of the strobes when recycling can put an excessive strain on the generator. Innovatronix has a solution with their Explorer XT portable power source.

ExpoImaging Tapped as Exclusive U.S. Distributor of Honl Photo Professional Products 2

ExpoImaging Tapped as Exclusive U.S. Distributor of Honl Photo Professional Products

Watsonville, CA (PRWEB) January 26, 2009 — ExpoImaging Inc. (www.ExpoImaging.net), developer and marketer of innovative camera accessories, including the Ray Flash Ring Light Adapter, ExpoDisc Digital White Balance Filter and the ExpoAperture2 Depth-of-Field Guide, today announced that it is now the exclusive U.S. distributor of Honl Photo Professional Products.

Photo Contest – Converging Lines 1

Photo Contest – Converging Lines

While it may be the middle of winter for some of you, we are going to launch a new photo contest based on an idea from a recent podcast host, Roberto Valenzuela. This contest is going to be about ‘Converging Lines”. Since an image with converging lines adds a nice dimension to your images, it seems like good practice to go out and shoot some images with this as a theme.

Nikon announces D3X 4

Nikon announces D3X

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.

Think Tank Photo Shapeshifter Backpack Review 13

Think Tank Photo Shapeshifter Backpack Review

I have had the hardest time dealing with camera bags over the years, from my first backback that got so heavy I couldn’t lug it around anymore to my uber cool Airport International 2.0 which is great for big jobs but what about when I want to go a little lighter? My old backback is too large, and my Airport International is too big, and my Modulous Speed Belt can’t hold enough nor is appropriate when traveling. So what does that leave?

Canon PowerShot line in SX1 IS with 1080p video 4

Canon PowerShot line in SX1 IS with 1080p video

Move over Nikon with your piddly 780p D-Movie, Canon attacks back with a consumer grade camera that can do 1080p! The new SX10 IS features a 10 megapixel CMOS sensor, face detection, motion detection, and a plethora of outstanding features.

Canon PowerShot G10 IS Camera Announced 7

Canon PowerShot G10 IS Camera Announced

Advanced amateur photographers are a discerning group, and they’ve flocked to Canon’s G-Series for its ability to meet and exceed their demands. The third-generation PowerShot G10 is a stunning successor, loaded with uncompromising specs like 14.7 megapixels, a 28mm wide-angle lens, and Canon’s new DIGIC 4 Image Processor for notably improved face and motion detection.

Canon announces EOS 5D Mark II 9

Canon announces EOS 5D Mark II

Canon’s update to the wildly popular full frame EOS 5D is here, and it’s better than ever. The EOS 5D Mark II has a stunning 21.1-megapixel full-frame CMOS sensor with DIGIC 4 Image Processor, a vast ISO Range of 100-6400 (expandable to ISO L: 50, H1: 12800 and H2: 25600), plus EOS technologies like Auto Lighting Optimizer and Peripheral Illumination Correction.

Using manual flashes with PC Sync 0

Using manual flashes with PC Sync

We have done a number of articles with different flash heads but we have never gone into the detail of how to set them up and make them work, this results in emails that we sit and explain all the details to people. So today I am going to go through how to setup these studio flashes and connect them to your camera to get the results you want.

Nik Software Announces Sharpener Pro 3.0 4

Nik Software Announces Sharpener Pro 3.0

Las Vegas, NV — September 4, 2008 (Photoshop World, Booth #321) — Nik Software today announced the latest version of its popular Sharpener Pro photographic plug-in for use with Adobe® Photoshop® and Apple® Aperture™. Designed for professionals and photo enthusiasts, Sharpener Pro 3.0 is the most advanced and powerful sharpening solution for photographers, eliminating the guesswork typically required for achieving superior and consistent results.

Wolverine ESP Digital Photo Album and Multimedia Player 19

Wolverine ESP Digital Photo Album and Multimedia Player

I have been a fan of Wolverine products for almost four years now and my trusty Wolverine FlashPac was in need of an upgrade. Not that the FlashPac didn’t do it’s job, its just that it was pretty slow and didn’t have a display that could be used to view the images. Without hesitation I turned back to Wolverine to see what they had available and I found the new ESP Digital Photo Album and Multimedia Player.

Camera Dojo Lightroom Presets 1.1 Released 2

Camera Dojo Lightroom Presets 1.1 Released

We are happy to announce the release of our updated presets for Adobe Photoshop Lightroom. The Dojo Essentials package now contains a few more presets and the existing presets have been tweaked slightly and compatibility with Lightroom 2.0 has been added. As before, the Dojo Essentials is a free set of Lightroom presets.