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
