Dag T <[EMAIL PROTECTED]> wrote: >Of course it is not necessary to have strictly parallel light rays, he >is right in that this would not make any images, but you do need "more >parallel" light rays than with film. Therefore some lenses, especially >wide angles, are not suitable for digital cameras. Micro lenses does >help a bit, but not enough.
Well simple trigonometry can be used to reveal the angles from the center of the lens at the flange to the corner of the image area. With full-frame it's 64.7 degrees and with the "APS' sensor it's 72 degrees. It's interesting to note that the Kodak DCS14n, which doesn't use microlenses, has poorer corner performance than the Canon EOS 1Ds, which does have them, the opposite of what one would expect. -- Mark Roberts Photography and writing www.robertstech.com
