I noticed a few days ago that my Zuiko 28/3.5 is not focusing to infinity, and upon scanning some recent slides I realized the image quality I am getting from this lens has dropped significantly. It sounds like an element inside got loose. I never took apart a Zuiko lens before and I would appreciate help and tips tackling with this problem.
It opens like most all other lenses. Not too difficult. Go to http://olympus.dementia.org/Hardware/ for an exploded view so you'll feel more confident.