Archived posting to the Leica Users Group, 1997/03/17

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Subject: Re: Circulars versus linears Polarising filters
From: "Peter Jon White" <pjwhite@tiac.net>
Date: Mon, 17 Mar 1997 21:46:36 +0000

> This is only partly true. Light reflected off of a glass surface _is_
> polarized, as stated. However, light reflected off of a polished metal
> surface, which applies to all SLR mirrors that I know of, is _not_
> polarized.

Greetings,

Ah, yes, that is correct. I must confess, there are so many things 
that appear to be metal that do polarize light, I forgot that reflex 
mirrors aren't on eof them. My F-1 does polarize the light at the 
focussing screen only.


Peter Jon White