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[OM] Reviewing the Basics of PL's with OM-4

Subject: [OM] Reviewing the Basics of PL's with OM-4
From: Chuck Norcutt <chucknorcutt@xxxxxxxxx>
Date: Fri, 14 Mar 2003 15:02:59 -0500
Will this work? Use same lens and linear polarizer on an OM-1 or OM-2 then switch lens and polarizer to OM-4 and make a center weighted reading. The difference is the "error" factor for the linear polarizer with the semi-silvred mirror. Then make your spot readings, average these and then apply the "error" factor just computed. Whether this works or not I suppose depends on whether there are dramatic differences in polarization in those areas seen by the spot vs the average.

Chuck Norcutt
Woburn, Massachusetts, USA

Joel said:
I'm going to be using a 77mm linear polarizer soon, likely with an OM-4
most of the time. Since I prefer to do multispot averaging, I believe that I am going to need to meter the scene and then open up by the appropriate filter factor for a polarizer, which is about 1 and 1/3 stops.
<snip>


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