On Thu, 12 Mar 1998 14:04:50 -0500, you wrote:
>
>Hi all:
>My first zuiko ever, a 50/1.8, has developed a sluggish diaphragm for
>the second or third time since I got it in 1980. I'm pretty sure this
>lens is not worth sending off to be fixed yet again. Has anyone on the
>list ever pulled one of these lenses apart and fixed a sticky diaphragm
>themselves? I think this is just the kind of info that would make a
>good addition to the camera repair FAQ. Failing this, how much to you
>charge to fix this problem, John?
Although at first sight you may think the blades themselves are
sticking (a difficult job to tackle oneself) it may just be the
linkage between the operating tab on the mount and the ring that
closes the blades (a relatively easy job).
Press the DOF preview button and rotate the aperture ring between its
extremities. Are the blades still sluggish? If they're not, the
linkage is sticky and you're in luck. After my 35 F2 had made several
trips to a supposed authorised Olympus repairer over here who
repeatedly missed this point, I removed the lens mount and applied a
tiny dab of moly disulphide paste to the linkage pivots. It's worked
perfectly ever since (more than 20 years).
Personally I wouldn't dare try to dismantle the lens "core" or the
diaphragm assembly myself, though there may be some on the list who
are braver than me!
Regards
--
John Gruffydd (Mold, Wales, UK)
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