jamesfc@xxxxxxxxxxxxxxx wrote:
>Hi Moose,
> I understood that some OM screens do have an effect on OM metering and I
>thought I remembered that a couple Olympus screens even come with a warning.
>
Only on the 1(n) and 2(n). On the 2(n) it only effects the needle in the
viewfinder, thus throwing off manual exposures and misleading the user
as to the actual, correct auto exposure that will be made based on light
reflected off first curtain and/or film. Starting with the 2S, the
photocells in the prism housing reading the brightness of the focusing
screen were replaced by a cell in the bottom of the mirror box. It reads
light that goes through the partially silvered central portion of the
mirror for display, manual and spot exposures and directly off
curtain/film for auto exposures.
Moose
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