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Tuesday 8 October 2013
Why SONY ?
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 an 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
and video recording operation. The fast continuous AF can be seen in live view mode. 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.
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.
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.
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