I think some lenses rely on a small spring to stop the lens down, once
the camera stops the external lever down. When the blades load up with
OIL, this light spring tension is not enough to make the blades close.
___________________________________
John Hermanson
Camtech Photo Services, Inc.
21 South Lane, Huntington NY 11743
631-424-2121 | Olympus OM Service since 1977
http://www.zuiko.com | omtech1 AT verizon.net
Don Holbrook wrote:
> Long time, quiet (till now), digest reader. Have a 24-48/3.8 lens that the
> diaphragm will not stop down. f-stop ring & rear tab move ok, stopdown
> button moves rear tab ok Assume either stuck or linkage problem. Can anyone
> point out what to look for if I pull the center ring off the rear mount that
> the tabs come thru, or lead me to a parts diagram that will show the linkage.
> Thanks in advance. Off-list OK.
>
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