I converted to the AF lens because it offered AF when used as a > medium telephoto, as well as 1:1 without an extension tube, but there were > many times doing close-up work when I wished I'd kept the MF lens ... Jeff
There are times with my 100 macro (EOS1n) when the in-focus indicator does NOT agree with my by-eye judgement through the eyepiece. I've neven actually bothered to take test frames at the two positions *wide open* to see which is right on film. Maybe I will now. Other than wide open there are of course other factors 1) stopped down the optimum point of focus need not be precisely the same as it is wide open (trivial for normal work but maybe significant for macro) 2) stopped down you get enough depth of field to cover the difference. Bob PS, my main reason for using MF on birds is that I like the highlight in the eye to be sharp rather than a donut. It's dead easy to tell "by eye" even when not looking straight at it - eg even if just to check that the AF sensor is actually on the eye not the beak * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
