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Re: [OM] Mirrorless - circular or linear polarizer?

Subject: Re: [OM] Mirrorless - circular or linear polarizer?
From: Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx>
Date: Wed, 05 Mar 2014 17:18:32 -0500
Well, I hope we're gonna find out soon.  :-)

Chuck Norcutt


On 3/5/2014 4:56 PM, Ken Norton wrote:
>> I can see where it MIGHT be a problem.  Last time I looked AA filters
>> use birefringent materail and thus polarize light.  The linear pol
>> should cause aliaising issues in one axis as it screws up the front
>> piece.  How that manifests itself and the severity of the artifacts
>> produced I have no clue.
>> Would look for moiré  in certain orientations I suppose.
>
> I would think that this means that you would have a natural
> polarization effect to the AA filter. As such, you should see a bit of
> angular darkening as a matter of course with directional light. Also,
> I think that the primary effect would be a darkening of the entire
> image (at least in one direction) if the linear polarizer were to be
> aligned with the material.
>
>
-- 
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