Hi Lucas, Have you checked that the aperture lever is not bent? That could be one little devil to make problems...:-)
Also, it could be that lubrication from the focusing thread has migrated onto the base of the aperture blades. This doesn't necessarily show through the glass. That's what had happened to the one I owned. It's not very difficult to take it apart and clean it, though. IIRC, the blades can be accessed from the back, by removing the bayonet. hth, Jostein Quoting Lucas Rijnders <[EMAIL PROTECTED]>: > Hi all, > > Recently I bought a M 35/2.8 as an aside to another lens purchase. It > arrived yesterday. The lens looks very good, the glass is flawless, the > aperture blades are clean, but open and close very sluggishly. If I push > the diaphragm actuator I feel a lot more resistance than with known good > lenses. > > The lens seems in good enough shape to try to repair the diaphragm. > Searching for tips on how to do this I only found oily blades or a > loosening spring as possible causes for a sluggish diaphragm. Both > explanations don't seem to conform to my observations, so something else > must be the matter... > > Would anyone have a suggestion on what might be wrong with the lens? Any > tips on how to tackle the problem? Would you start from the front or the > back of the lens in this case? > > I'll be gratefull for any insight, > > Thanks in advance, > -- > Regards, Lucas > > ---------------------------------------------------------------- This message was sent using IMP, the Internet Messaging Program.
