> Another example: the 180 macro would have to move 180mm further away > from the camera to focus at 1:1 if it didn't have IF and change > (shorten) focal length. >
Can anyone tell me what the focal length of the the 180 macro is at 1:1? How does this compare to the Sigma 180 macro? More importantly, what is the working distance from the front of the lens to the subject at 1:1? Thanks, JD * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
