Sony SLT camera Single-lens translucent is a Sony proprietary designation for Sony Alpha cameras which employ a pellicle mirror , electronic viewfinder , and phase-detection autofocus system. They employ the same Minolta A-mount as Sony Alpha DSLR cameras. Sony SLT cameras have a semi-transparent fixed mirror which diverts a portion of incoming light to a phase-detection autofocus sensor, while the remaining light strikes a digital image sensor . The image sensor feeds the electronic viewfinder, and also records still images and video on command . The utility of the SLT design is to allow full-time phase-detection autofocus during electronic viewfinder, live view , and video recording operation. With the advent of digital image sensors with integrated phase-detection, the SLT design is no longer required to accomplish this goal, as evidenced by cameras such as the Sony NEX-5R , Fujifilm X-100s, and Nikon 1 , although the SLT design avoids having pixels unavailable for image formation due to their space on the sensor being occupied by a dedicated phase detection autofocus sensel. The term "translucent" is a misnomer for the actual SLT design, which employs a pellicle mirror that is not translucent. Pellicle mirrors have been used in single-lens reflex cameras from at least the 1960s.Model Announcement Megapixels Sensor Screen Built-in flash Sony Alpha 33 2010 14 MP APS-C 3" articulated Sony Alpha 35 2011 16 MPAPS-C 3" fixed Sony Alpha 37 2012 16 MP APS-C 2.7" tilting Sony Alpha 55 2010 16 MP APS-C 3" articulated Sony Alpha 57 2012 16 MP APS-C 3" articulated Sony Alpha 58 2013 20 MP APS-C 2.7" tilting Sony Alpha 65 2011 24 MP APS-C 3" articulated Sony Alpha 68 2015 24 MP APS-C 2.7" tilting Sony Alpha 77 2011 24 MP APS-C 3" fully articulated Sony Alpha 77 II 2014 24 MP APS-C 3" fully articulated Sony Alpha 99 2012 24 MP 3" fully articulated Sony Alpha 99 II 2016 42 MP 3" fully articulated
All of the above cameras record 1920x1080 video at 60i/30p, in MPEG-4 , AVCHD or H.264 formats. The Alpha 99II also records 4k video at 100Mbit/s with full sensor read-out. Source: summarised from the .
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