David Gagnon wrote: | Hello, | | I have a mecanical problem with my Canon 100mm macro. In autofocus mode, | the motor continue to work even if the focus is at his maximum | (infinite). Also, the ring is difficult to rotate in manual focus | (probably, some gears are broken inside the lens). | | Do you have some advice, suggestion about this problem. | | Thanks lot.
David, Welcome to 100/2.8 (non-USM) macro hell :) The exact same thing happened to me twice. The first time it was within 2-3 months of purchase. There was a clicking/sticking feeling when I rotated the MF ring. The second time the lens died, it was also within the warranty period. I've written a short article about it here: http://www.rsriram.ws/review-100macro.html Eventually, after pressurising Canon and writing letters to Japan, they extended my warranty to 2 years. Anyway, I sold the lens ASAP and got a 100/2.8 USM - fantastic lens. I believe this is not an uncommon problem with the old non-USM 100/2.8. If you're going to use AF, I'd suggest dumping this lens and getting the new 100/2.8 USM. It's a fantastic lens, and AF is really useable even at 1:1 magnifications. Cheers, Sriram. * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
