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Re: [OM] Linear vs. Circular polarizer

Subject: Re: [OM] Linear vs. Circular polarizer
From: "Piers Hemy" <piers@xxxxxxxx>
Date: Thu, 9 Oct 2003 20:45:35 +0100
You don't have to worry with the OM-20 (G).

The semi-soilvered mirrors on the 2SP, 3(T) and 4(T) have the effect of
polarizing the light passing through them.  If you use a linear polarizer,
that will do the same, and if the two polarizations are at 90 dges to one
another, the meter will think it isd very dark indeed - until the mirror
flips out of the way.  SO the "interference" is only with the pre-exposure
viewfinder indication.

Piers


-----Original Message-----
From: owner-olympus@xxxxxxxxxxxxxxx [mailto:owner-olympus@xxxxxxxxxxxxxxx]
On Behalf Of reganconley@xxxxxxxxxxxxx
Sent: 09 October 2003 20:17
To: Olympus@xxxxxxxxxxxxxxx
Subject: [OM] Linear vs. Circular polarizer


Since I have a manual focus camera & lenses I take it that I can use a
linear polarizer.  But I've heard that a linear polarizer *may* interfere
with the meter.  In essence: linear polarising filters can sometimes
interact with semi-silvered mirrors or prisms to split the light entering
the viewfinder in order to calculate exposure.  Is this something I need to
be concerned about with my OM-G (20)?

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