[jglass]

I let this thread expire before bcs I was too lazy to post photos and tightening a screw got me by. I just kept using the lens . . . until a knew problem.

Now 1 screw on the ring behind the aperture ring is gone and one on the same ring is loose and I have snugged it in but not tightened it hard. The ring on which the loose screw and missing screw are located was turning freely so that aperture did not stay steady against the white marker dot. When I tightened the loose screw I was able to set the ring at the right spot for the actual aperture and tighten down the screw so the ring did not swing freely.

Pic 1 is the missing screw. Pic 2 is the gummed up loose screw I tigtened and Pic 3 shows the one good screw at the bottom and a silhouette of the loose screw AFTER tightening. Meanin it is NOT set right.

Any help for me? How much is a good CLA of this lens?

Thanks