"Konstantinos Bibis" <[EMAIL PROTECTED]> wrote/replied to: > >I own the 100-300 USM and i've recently seen a photo by a friend, >taken with the 75-300 IS . It was way sharper than any of mine taken >with the 100-300 USM.
Only way to know is put them both on a tripod and shoot them both then compare in same conditions, same film, same light. >Is the 75-300 IS considered generally sharper than the 100-300 ? Does >the micro-USM make it slower to focus than the 100-300 ? >But it was mainly optical performance i was interested in at let's say >300 @5.6 Both are about the same at 300mm. As to focus, the 75-300 focuses quite quickly, just a bit noisier than USM. Are you comparing photos handheld with IS on one lens and one without? If so you will definitely find the IS makes sharper photos. * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
