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[OM] Re: OM1 light meter

Subject: [OM] Re: OM1 light meter
From: Mark Dapoz <md@xxxxxxxxxxxx>
Date: Wed, 16 Mar 2005 14:28:15 -0500 (EST)
On Wed, 16 Mar 2005, Simon Worby wrote:
> 
> Der Eiserne Reiter wrote:
> 
> > BTW, for whom it matters: the PEN FT doesn't do this. There is a
> directional
> > filter (like a twisted fence?) between PentaPrism and CDS. This is why
> I
> > was wondering ...
> 
> I didn't think the Pen FT had a pentaprism...

The porroprism does use prisms but not in a pentaprism organisation.  If I
remember correctly, the FT's meter sits behind a half-mirror on the far right
side of the body (which is why the FT's viewfinder is so dim).  The half-mirror
should allow light from the eyepiece through, but since it's not as close or
as intense as the OM's arrangement, the effect is likely minimal.  I bet
shining a light directly into the eyepiece will affect the FT's meter.
                                -mark


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