DSLR Mirror Lock-Up – Worth the Effort or Not?

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It’s the reflex in Single Lens Reflex – the ubiquitous mirror that allows SLR cameras to use the same optical path for composition, focusing, and metering.  The mirror action is a marvel of mechanical genius, but does the mirror movement cause vibrations that subtly degrade the image?  And does the mirror lock-up feature solve the [...]

CameraTechnica Labs: High Speed Video of Aperture Blades Closing

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If you’ve been following this site, you’ve already read about the science behind aperture and depth of field. You’ve also read about how the number of aperture blades controls the number of points in your starburst highlights.  The mechanics of the aperture blades behind these effects are a marvel in and of themselves.  Aperture blades must [...]

How to Photograph Bluebirds – Diary of a Two Year Photo Shoot Setup

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If you are an aspiring bird photographer, the quickest way to start is to photograph the birds around you.  Mark Twain’s famous advice for writers is to “write what you know.”  For nature photographers the analog is to shoot what you know.  Northern Cardinals, Chickadees, and Sparrows abound in many backyards and are great subjects [...]

The Science of Polarizing Filters

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While Photoshop and its many imitators have rendered a lot of camera gear useless, there is still one physical filter which Photoshop cannot emulate – the polarizing filter. The systematic screening of certain kinds of light is a job that can only be done during capture. While polarizing filters are among the most useful tools [...]

Nikon Releases D5100 DSLR

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Nikon has released the latest in its line of prosumer DSLR cameras – the D5100.  Noteworthy features on this camera include: * A fully articulating 3 inch LCD display with 920k dot resolution * 16MP crop frame sensor * 1080P, 30p HD video * Full-time auto-focus during video shooting * In-camera HDR processing * Built [...]