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DPChallenge Forums >> Hardware and Software >> This may be a dumb question but...
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05/21/2008 02:22:21 PM · #1
..."IS" the Canon EF-S 10-22mm f/3.5-4.5 USM lens 10-22mm on a 1.6 crop camera? I know the -S lenses don't work (or I have been told) on full frame cameras so I'm a little confused. On my 40D will it be 10-22mm or 16-35mm taking in account the 1.6x crop factor?

Sorry for such a question but I'm thinking of purchasing this lens and want a super wide zoom.

Thanks in advance
Scott
05/21/2008 02:28:05 PM · #2
16-35mm

Even though they won't work on a FF camera, they don't take into account the multiplier when advertising the lens.
05/21/2008 02:35:37 PM · #3
Originally posted by bfox2:

...they don't take into account the multiplier when advertising the lens.

That's true of ANY lens. Even on a P&S camera, the specs will be listed as 4.6-17mm (or whatever) because that is the focal length of the lens.

10-22 is the widest rectilinear lens available for the 40D. Anything wider will be a fisheye.
05/21/2008 02:35:53 PM · #4
Originally posted by bfox2:

16-35mm

Even though they won't work on a FF camera, they don't take into account the multiplier when advertising the lens.

Thanks...I guess I would have to go to a fish-eye lens to get a wider range. But I guess the 10-22mm would be the best without distorting the image to bad. I have also been looking at the Tokina 10-20 f/4.
05/21/2008 02:48:00 PM · #5
The Tokina 10-20 is a fisheye, though not by much.
05/21/2008 02:54:29 PM · #6
The Tokina 10-17 is a fisheye. Tokina doesn't make a 10-20mm lens. Sigma does, but it's not as good as the Canon. FWIW, the Tokina 11-16 f/2.8 looks very interesting.
05/21/2008 03:13:32 PM · #7
Originally posted by scalvert:

FWIW, the Tokina 11-16 f/2.8 looks very interesting.


wow, just had a quick look on ebay and it's already available and not even much more expensive than the prior 12-24 f4 (which i'm selling btw, so if you're interested drop me a pm).
05/21/2008 03:19:42 PM · #8
Originally posted by SDW:

This may be a dumb question but...

There's no such thing as a dumb question. Only dumb voters. :-p

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