Digital Camera Sony Alpha A55 Using Pellicle-Mirror Technology Shots Faster

Nov. 18, 2010 - PRLog -- Sony's latest interchangeable lens cameras, the SLT Alpha A55 and A33 represent a significant technological milestone - not just for Sony but for the enthusiast camera market as a whole. they've stepped up their interchangeable-lens offerings in a big way with a handful of hybrid models. Sony calls the A55 (and little sibling A33) a single-lens translucent (SLT) camera rather than an SLR.

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Sony Alpha A55 Using Pellicle-Mirror Technology - Rapid-fire snappers

The A55 is a 16.2-megapixel model, while the A33 packs 14.2-megapixels. The A33 uses the same sensor as the Sony NEX-5 and NEX-3, the first cameras in Sony's NEX interchangeable-lens compact range, while the A55 uses a larger APS-C CMOS sensor. With their innovative translucent-mirror technology, the A55 and A33 blur the lines between traditional dSLRs and newer interchangeable-lens cameras.

Sony Alpha A55 Using Pellicle-Mirror Technology - Faster Autofocus

The continuous autofocus is impressively quick, but, in some situations, the constant refocusing is too much. You can press the shutter button halfway to lock the focus, but we found that the camera would often start hunting around again. That's also a problem when shooting video, as both you and the subject are moving, leading to the focus jumping around.

Sony Alpha A55 Using Pellicle-Mirror Technology - Smaller and Lighter

The fixed mirror means the cameras are relatively small -- 23 per cent smaller and 26 per cent lighter than the Sony Alpha DSLR-A550, to be precise. They're very light, but with a solid and comfortable rubberised grip.

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