In your message dated: Mon, 30 Mar 1998 18:56:33 GMT you write:
>
>I do however think that the case for using circular polarizers on
>cameras
>
>measuring light through the mirrors has been somewhat overstated. The
>
>errors are not that large, especially if you are shooting neg film.
I have to strongly disagree here. Right after I got my first OM-4 in
1994, I went to Chile on an eclipse expedition. I was all excited about
spot metering, and used the spot meter for most of my shots. I was
shooting K64 and Fuji. Upon my return, I found all of my slides where I
had used the spot meter badly overexposed. I thought there was a
problem with the camera, but sure enough, I had kept old polarizers on
my lenses. They were of the non-circular type, and thus caused the
problem. So my advice is that if you must use a polarizer, use a
circular one. However, as Galen Rowell states, "I never use a polarizer
much anymore, because the color saturation of the newer emulsions is
such that is is not usually necessary" or words to that effect.
Cheers,
--Lee
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