Archived posting to the Leica Users Group, 1999/01/27

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Subject: Re: [Leica] Re: Polarizing Filter
From: "Dan Post" <>
Date: Wed, 27 Jan 1999 21:27:21 -0500

They work with the SL!, thank goodness!
- -----Original Message-----
From: Tina Manley <images@InfoAve.Net>
To: <>
Date: Wednesday, January 27, 1999 6:41 PM
Subject: Re: [Leica] Re: Polarizing Filter

>At 02:24 PM 1/27/99 -0800, you wrote:
>>The clerk is absolutely totally wrong. The partial silver reflector that
>>directs the exposure light to the photocell within the R cameras acts like
>>a polarizer. Pitting a linear polarizer on your lens will block most, if
>>not all of the light from getting to the cell, thus giving you an improper
>>reading. All Leica R cameras REQUIRE a circular polarizer. That's why
>>makes them.
>>Some autofocus systems require a circ polarizer, some don't.
>Thanks, Jim.  I had no idea.  I guess I should take a deep breath before I
>reply.  I used to teach in my classes that circular polarizers were only
>necessary for autofocus lenses; however, since I don't use them myself, I
>shouldn't have jumped in to answer.  It would be nice if the cheaper linear
>polarizers would work on Leicas!  Stick with black and white and use M's
>and you won't have to worry about filters!
>Tina Manley, ASMP