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Posted by joel rosenthal on 17:04:02 02/02/08
In Reply to: Focal length posted by John Boyd
I think you've knocked down a straw man nicely John. Looks to me like Paul and D are correctly referring to "equivalent" focal lengths of digital cameras with less than the full frame sensors typical of 35mm film cameras. Nowhere in their posts do I see any specific reference to "focal lengths", but just to the mm equivalents or fields of view, or focal length multipliers(call it what you will--but they didn't call it focal length) that Nikon and Canon "crop factor " digital slrs create(by virtue of their sensor size) for lenses of specific focal lengths(Nikon 1.5x, Canon 1.6 or 1.3 depending on the sensor size in the particular model body)-their point being that the image from a 500mm lens on your digital Canon 40D would be the equivalent of a 1.6 crop of the same image on a full frame 35mm slr. Am I missing something here?
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