On Thu, 9 Sep 2004 22:37:38 -0400, "Ken Lin" <[EMAIL PROTECTED]> wrote/replied to:
>I very vaguely remember something in this EOS user group forum that someone >mentioned the manual focus mechanism is tied to the friction ring that locks >the lens barrel in place so the zoom setting doesn't change, I regularly >tighten this ring (but not excessively) to keep the lens in the shortest >length while the lens/camera is hanging over my shoulder, I wonder if the >tightening of the friction ring causes premature wear of the focusing ring >unit?? I will do a search of the archive to see what I can find. > >So, in the mean time, may I suggest you EF100-400 users to minimize your use >of the friction ring, I know I will probably never use the friction lock >again after paying for this repair. Exactly, as I have mentioned here before. I only need a bit of a tighten to lock the zoom from dropping. I don't really need it when shooting unless I'm shooting upwards. Wipe and clean the barrel often. Avoid the beach and blowing dirt. Thanks for a live demo of the problem, sorry to hear it's so expensive. Check a used lens carefully :-) -- Jim Davis, Nature Photography http://jimdavis.oberro.com/ Standard Poodles for fun BMW motorcycle for pleasure * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
