I had the same problem with a DZ 14-54mm, whenever it was mounted on a body
the aperture went to minimum (f22), I sent it in for repair and it returned
working properly for a while then reverted to f22 behaviour so I sold it.
> -----Original Message-----
> From: olympus <olympus-
> bounces+wayne.harridge=structuregraphs.com@xxxxxxxxxxxxxxxxx> On
> Behalf Of DZDub
> Sent: Wednesday, 6 July 2022 4:30 AM
> To: Olympus Camera Discussion <olympus@xxxxxxxxxxxxxxxxx>
> Subject: [OM] When is a m43 lens dead?
> Sadly, I think my new-to-me mZ 12-40/2.8 may be dead. The telltale sign
> that regardless of AF setting, it wants to be in MF. I cannot change to
> through the menu. I can make the lens work in MF and take photos, so it
> won't autofocus and won't get into a position even to try.
> All other lenses work appropriately, whether mZ mount or DZ lenses + MMF
> adapter. I have a dead DZ 14-54 and, on MMF of course, it is also locked
> MF, except that light won't even pass through the glass on that one.
> So I believe it must be a problem in the specific lens itself, not the
> Anyone come to a different conclusion or have anything to try other than
> what I have already tried?
> Joel W.
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