> Hi Julian & Grega,
>
> I have a "ef lenses" brochure from a few years ago. It list's the
> ef 22-55 f/4-5.6 usm. It says, and I quote:
>
> "The replicated aspherical lens element makes this wide-angle zoom
> light and small. The Canon-exclusive Micro USM makes it fast and
> quiet, too. Great for traveling light. It's also perfect as your
> regular wide-angle lens. When the lens is attached to an EOS Advanced
> Photo System SLR camera, the 35-mm equivalent focal length is 28-69mm"
>
> What I want is clarifaction the the last sentence of this ad. To me
> it means when used on the APS body it is a 22mm but on any other EOS
> body it's a 28mm. Right?
>
> -Dan
> Canada
1) The lens is 22mm regardless of the camera used.
2) APS ("Advanced Photo System") isn't full frame
compared to 135 format. In effect, the APS
camera does some build-in fixed cropping.
3) Using a 22mm lens on an APS camera produces a
(cropped) image comparable to that of a 28mm
lens on a 135 camera (uncropped).
Lars
--
Lars Michael [EMAIL PROTECTED]
87GT http://www.citilink.com/~larry/gallery
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