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See Also: Single-Lens Translucent (SLT) Is A

Sony's Single-Lens Translucent (SLT) cameras employ a semi-transparent fixed mirror that diverts some light to a phase-detection autofocus sensor while the rest hits the image sensor, allowing the sensor to feed an electronic viewfinder. This SLT design enables continuous phase-detection autofocus during shooting with the electronic viewfinder. However, the term "translucent" is a misnomer as SLT cameras actually use a pellicle mirror, and this mirror design has been used in single-lens reflex cameras since the 1960s. SLT cameras can record 1080p video in common formats, and the Alpha 99II additionally records 4K video at 100Mbps with full sensor readout.

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57 views1 page

See Also: Single-Lens Translucent (SLT) Is A

Sony's Single-Lens Translucent (SLT) cameras employ a semi-transparent fixed mirror that diverts some light to a phase-detection autofocus sensor while the rest hits the image sensor, allowing the sensor to feed an electronic viewfinder. This SLT design enables continuous phase-detection autofocus during shooting with the electronic viewfinder. However, the term "translucent" is a misnomer as SLT cameras actually use a pellicle mirror, and this mirror design has been used in single-lens reflex cameras since the 1960s. SLT cameras can record 1080p video in common formats, and the Alpha 99II additionally records 4K video at 100Mbps with full sensor readout.

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Satheesh Kumar
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Single-Lens Translucent (SLT) is a Sony proprietary designation for Sony Alpha cameras which

employ a pellicle mirror, electronic viewfinder, andphase-detection autofocus system. They employ
the same Minolta A-mountas Sony Alpha DSLR cameras.[1]
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.[2][3]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.[4][5]
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).
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 100Mbps (using XAVC S) with full sensor read-out.
Source: summarised from the full comparison table at DP Review.

See also[edit]

Photography portal

Sony ILCA camera

Digital single-lens reflex camera

References[edit]
1.

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