Sony SLT camera
Model Megapixels Sensor Screen Built-in flash
Sony Alpha 33 14 MP APS-C 3 articulated ( pop-up )
Sony Alpha 35 16 MP APS-C 3 fixed ( pop-up )
Sony Alpha 37 16 MP APS-C 2.7 tilting ( pop-up )
Sony Alpha 55 16 MP APS-C 3 articulated ( pop-up )
Sony Alpha 57 16 MP APS-C 3 articulated ( pop-up )
Sony Alpha 58 20 MP APS-C 2.7 tilting ( pop-up )
Sony Alpha 65 24 MP APS-C 3 articulated ( pop-up )
Sony Alpha 68 24 MP APS-C 2.7 tilting ( pop-up )
Sony Alpha 77 24 MP APS-C 3 fully articulated ( pop-up )
Sony Alpha 77 II 24 MP APS-C 3 fully articulated ( pop-up )
Sony Alpha 99 24 MP Full-frame sensor 3 fully articulated
Sony Alpha 99II 42 MP Full-frame sensor 3 fully articulated
List of SLT cameras
Sony Alpha 55
Single-lens translucent (SLT) 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 (see Canon Pellix).