Jim Davis Nature Photography wrote: > Other than moving the rear element further from the sensor I can't > think of how this is done. And moving that out would create a much > larger, longer and likely heavier lens. > ----------------------------------------
If you move the rear element than the lens would not work for regular film cameras, which it does, because the focus point would be altered. The Sigma and Tamron and Canon lenses that are made with digital in mind all work with both primarily because they are bending the light more to the central area. Peter K * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
