Archived posting to the Leica Users Group, 1998/01/13

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Subject: Re: [Leica] Polarizing Filter w/Leicaflex & R cameras
From: Jim Brick <jim@brick.org>
Date: Tue, 13 Jan 1998 09:07:30 -0800

At 08:57 AM 1/13/98 -0500, you wrote:
>Excerpts from mail: 12-Jan-98 [Leica] Leica-Users List Di.. by
>Listmgr@mejac.palo-alto. 
>> For Leicas, it's the fact that a portion of the incoming light is directed
>> through a partially silvered mirror (the SLR mirror), for exposure
>> determination. The partially silvered mirror (beam splitter) acts as a
>> polarizer and will give incorrect exposure readings with a linear
polarizer.
>
>Well, I dunno about Leica Rs, but I talked with - gasp! - Nikon about my
>old F3, which also uses a part-silvered mirror spot in the metering
>system. They assured me that linear polas were fine; and indeed, I seem
>to have no trouble using one. So, are there other factors present that
>mandate circulars for some cameras but not for others?
>

For Leicaflex & R cameras, simply read the Leica literature and it will
tell you exactly what I said. I didn't make it up.

End of subject.

Jim