Hi, Just today I started noticing a phenomenon with my 35mm Summicron ASPH that I've never experienced before. All of the sudden, when I move the focus ring on the lens, I notice what seems like a lot of tension making it harder to move. It's not impossible or anything--it just doesn't have the same smooth glide it did last time I used it (about a week ago). I know that this can happen with older lenses (I have a previous generation 50mm Summicron that has a little bit of that), but I have only had this lens since August, and the problem seems to have happened out of the blue! Does anyone know what could have caused this? Should I send this lens in for service? Is there a quick fix--is there a fix at all? Any help you knowledgable people could offer would be greatly appreciated!

Thanks much!

Buzz

-- Buzz Andersen (landerse@du.edu), September 30, 2000

Answers

I would try slipping a piece of paper between the optical unit (the part with the glass that does not rotate but moves in and out as you focus) and the focus mount (the part you move to focus). Sometimes debris can accumulate in there. If that does not do anything, I would send it in to be checked as internal screws may have loosened or......

-- John Collier (jbcollier@home.com), September 30, 2000.

Thanks--that seems to have done the trick! I appreciate your help...

Buzz

-- Buzz Andersen (landerse@du.edu), October 01, 2000.