World Library  
Flag as Inappropriate
Email this Article

Sony SLT camera

Article Id: WHEBN0028519902
Reproduction Date:

Title: Sony SLT camera  
Author: World Heritage Encyclopedia
Language: English
Subject: Sony Alpha 77, Sony Alpha 55, Sony Alpha 65, Sony Alpha 99, Sony Alpha 57
Collection: Sony Alpha Dslr Cameras, Sony A-Mount Cameras
Publisher: World Heritage Encyclopedia

Sony SLT camera

The Sony SLT design features a pellicle mirror which allows light to strike both the digital image sensor (parallel to the lens mount, behind mirror) and phase-detection autofocus sensor (perpendicular to the mount) at all times.

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.[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).

List of SLT cameras

Sony Alpha 55
Model Megapixels Sensor Screen Built-in flash
Sony Alpha 33 14mp APS-C 3" fully articulated Yes (pop-up)
Sony Alpha 35 16mp APS-C 3" fixed Yes (pop-up)
Sony Alpha 37 16mp APS-C 2.6" tilting (lower res) Yes (pop-up)
Sony Alpha 55 16mp APS-C 3" fully articulated Yes (pop-up)
Sony Alpha 57 16mp APS-C 3" fully articulated Yes (pop-up)
Sony Alpha 58 20mp APS-C 2.7" fully articulated (lower res) Yes (pop-up)
Sony Alpha 65 24mp APS-C 3" fully articulated Yes (pop-up)
Sony Alpha 77 24mp APS-C 3" fully articulated Yes (pop-up)
Sony Alpha 77 II 24mp APS-C 3" fully articulated Yes (pop-up)
Sony Alpha 99 24mp Full-frame sensor 3" fully articulated (xtra fine) No

All of the above cameras record 1920x1080 video at 60i/30p, in MPEG-4, AVCHD or H.264 formats.

Source: summarised from the full comparison table at DP Review.

See also


  1. ^ "Lenses for Translucent Mirror cameras".  
  2. ^ "Sony Single-Lens Translucent Cameras". 
  3. ^ "Mirrorless Cameras: A Primer". December 15, 2011. 
  4. ^ "Fujifilm's phase detection system explained".  
  5. ^ Mike Tomkins. "Nikon V1, J1: Two new compact system cameras for Nikon's mirrorless debut". Imaging Resource. 
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.