Sony Alpha 57

The Sony Alpha 57 (model name SLT-A57) is a Digital single-lens reflex camera that replaced the A55 in 2012. The camera features an electronic viewfinder and a translucent mirror. The main advantage of a translucent mirror is that it needn't flip up out of the way when taking a picture in order to expose the sensor, but the camera can focus and capture images simultaneously. The camera's 15-point autofocus system can be set to single, continuous or automatic and is arranged towards the centre. The 12-fps burst mode is available only in "speed priority" mode but can reach up to 5.5 fps burst rate in combination with any other settings.

Feature list

 * 16.1-megapixel Exmor™ CMOS sensor (4912 × 3264)
 * Updated BIONZ™ image processor
 * ISO 100 - 16,000 (25,600 with multi-image combination)
 * Auto ISO 100 - 3200
 * Pull-out three-hinge tilt/swivel 921K dot TruBlack™ LCD screen
 * Stereo microphone and external mic socket
 * Dust shake sensor cleaning
 * second-generation Translucent Mirror Technology™
 * 12 fps burst mode at full 8-megapixel resolution
 * Tru-Finder™ XGA electronic viewfinder with 1440K dots resolution with full 100% frame coverage.
 * AVCHD video recording at 1920 × 1080 (50p/60p (1080p) @ 28 Mbit/s, 50i/60i (1080i) @ 24 Mbit/s, 50i/60i (1080i) @ 17 Mbit/s, 25p/24p (1080p) @ 24 Mbit/s, 25p/24p (1080p) @ 17 Mbit/s, 25p/24p (1080p)) @ 12 Mbit/s)
 * MPEG-4 video recording at 1440 × 1080 (approx. 25/30 fps @ 12 Mbit/s (average bit-rate), 640 x 480 (approx 25/30fps @ 3Mbit/s)
 * Live View with full-time Phase Detection AF
 * 15-point autofocus sensors.
 * SteadyShot™ image stabilization system in body
 * 3D Sweep Panorama™
 * Full tilt/swivel LCD screen
 * Multi-frame noise reduction
 * Object tracking AF