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35mm echivalent prime for APSC

Started May 2, 2016 | Questions thread
SarahBK
SarahBK Regular Member • Posts: 184
Re: 35mm echivalent prime for APSC

The 'S' designation is only to let buyers know that these lenses cannot be mounted onto a full frame camera - I believe there is a physical limitation on the mounting part of such lenses. I presume that even if EF-S lenses had no physical incompatibility, they would not be able to cover the full sensor of a full frame camera. The reverse is not true - EF lenses can be mounted to crop sensor cameras. And hence, as others have said, a 35mm EF-S (i.e. crop sensor) lens and 35mm EF lens give exactly the same field of view when mounted on a crop sensor camera (as you rightly said the equivalent of 56mm on a full frame).

I've been using the 24mm f/2.8 STM and I've been happy with it, although indeed at f/2.8 it is still kinda slow. If 35mm were a focal length I was using 90% of the time, rather than buying a wider aperture alternative, I'd probably be seriously considering a full frame camera in order to benefit from one of the nice 35mm lenses around (Canon 35mm f/2 IS, 1.4L etc).

 SarahBK's gear list:SarahBK's gear list
Canon 6D Mark II Canon EF 100mm f/2.8 Macro USM Canon EF 70-200mm F4L IS USM Canon EF 40mm f/2.8 STM Canon EF 24-70mm F4L IS USM +2 more
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