Revision based on a production Sony SLT Alpha A55V with firmware version 1.0Latest Sony interchangeable lens system cameras, the SLT Alpha A33 and A55 represent a technological milestone-not only for Sony but for the entire camera enthusiast market.The company rejected the traditional DSLR design and instead created a hybrid that, as a compact camera, is built from the ground up around live view, but what is also able to offer full-time DSLR-style phase-detection autofocus. The combination means can offer features such as phase detection AF during movie recording and amazingly fast continuous shooting rates (10 frames per second at A55), unthinkable at this price.This is made possible by adopting an approach that has more in common with a mirrorless camera (such as the Panasonic G2, for example) a reflex by removing bits which practically define these cameras: the optical viewfinder and moving mirror.The name ' slt ' stands for single lens is translucent and the bit ' translucent ' that is the key to what differentiates these new models from both conventional DSLRs and interchangeable lens mirrorless cameras. The SLTs are mirrors, but are mirrors that allow most of the light passed straight to the sensor, rather than having to swing out of the way to allow for exposure. Consequently they are fixed in position, always reflecting a part of the light emerging from the back of the lens on an array of phase-detection AF housed at the top of the camera. (A newly-developed 15-an array of points in the case of these two cameras).The APS HD CMOS sensor A33 features the same 14 million as the NEX-3 and NEX-5, but the sensor A55 is brand new, with 16.2 million effective pixels-maximum resolution APS-C format sensor Sony yet. In another first for big models of Sony interchangeable lens body, both cameras can shoot well, movie files to 1080p HD resolution. Technically this review was conducted with a A55V SLT: Variant enabled GPS camera that will be sold in most markets – only a handful of countries (including Japan), will be a non-GPS A55 sold.
4 .2MP APS HD CMOS sensorFixed (effective), type of film semi-transparent mirrorMaximum ISO 12800 (with almost-25,600 ' Multi-frame NR ') 15-point phase-detection AF array with 3 Cross-type AF pointsElectronic crosshair resolutionBuilt dot with 1.15 million-level in the EVF/LCD GPSElectronic with pitch/roll indicatorDual-order Memory Stick/SD card slot10fps continuous shooting mode with continuous rate1080p AVCHD movie AFArticulated 3 '' LCD with TruBlack ' 912 k dotssocket for external microphone2x magnification modes in live viewFace-detection AF (focus through the nearest phase-detection AF)
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