Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
Canon Lens Abreviation question?
What does the S designation stand for on Canon EF lenses? As in EF S. I know EF is the common Canon mount, but don't know what the difference is with the EF-S.
3 Answers
- SordenhiemerLv 71 decade agoFavorite Answer
The S stands for Short back focus. EF-S lenses use the Canon EF mount, but the rear element of the lens is closer to the camera's image sensor. These lenses are designed to be used only on the Canon crop frame cameras. They can be mounted on a full frame Canon DSLR camera, but because the rear element of the lens is closer to the sensor, the larger mirror of the full frame camera will strike the rear element of the lens, damaging one or both part.
- Jim ALv 71 decade ago
Actually the part about the motor in the camera on EF lenses is untrue. My source:
http://en.wikipedia.org/wiki/Canon_EF_lens_mount
Same source - EF-S lenses
- vashistha pathakLv 41 decade ago
EF-S for APS-C sensor camera(crop sensor or small sensor DSLR), 600D, 550D, 60D etc...
EF for Full frame sensor camera like 5D(MarkI, II) and 1Ds(Mark I, II)
You can use EF lens on APS-C sensor camera but you cannot use EF-S lenses on 5D and 1Ds series of camera
Source(s): http://thenewcamera.com/
