What is required for a lens to communicate with an OM body so the meter
will function?
Seems the only communications ( lens to body) are the auto aperture
trigger (hopeless cause on a non system lens) and the aperture-meter
coupling tab doohicky. With a Zuiko, the manual exposure meter will
respond to changing the aperture setting on the lens even with the lens
wide open. Now even my only T2 mount lens (Celestron 750 f8)has a
small tab and it seems to meter OK manual and auto. With no tab
the cam thinks the lens is (I think) about F32) Will auto mode still
work with no tab? Does the tab tell the cam the aperture is F1.2?
I don't understand how an F8 lens willl meter properly. The 2nd
metering circuit on auto visible in the VF seems to work OK with that
lens.
The shift lenses are essentially stop down metering, so perhaps just
the tab is necessary. My 35 shift clearly meters fine in both modes
pre shift.
Why I am asking will be perfectly clear in a few weeks.
Thanks for any comments. I can't think of any better place to ask, but
Fri PM is likely not the best time.
A. Confused Mike
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