I dunno but would guess that the contrast detection system in the
autofocus mechanism probably places it into the circular camp. It would
appear that the semi-silvered mirror of the later OM's have given way to
more conventional pentaprism metering ala OM-1 so a circular polarizer
wouldn't be required on that count. Too bad I think since I also assume
metering needs to be protected from stray light in the eyepiece ala OM-1
as well. I've always wanted an OM-2n and analogue meter but with the
meter sensor from the OM-2s.
Chuck Norcutt
Geilfuss Charles wrote:
> Speaking of polarizers, do the E System cameras require circular Pol.
> filters or are linears acceptable?
>
> Charlie
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