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[OM] Mirrorless - circular or linear polarizer?

Subject: [OM] Mirrorless - circular or linear polarizer?
From: Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx>
Date: Mon, 03 Mar 2014 09:27:49 -0500
The recent discussion on circular polarizers caused me to ask myself 
whether I really need an (expensive) circular polarizer on a mirrorless 
camera.  With our now unimpeded sensors might we be able to go back to 
the linear polarizers we used prior to beam-splitting autofocus or 
beam-splitting metering systems?  So I looked up what Wiki has to say on 
circular polarizers and found this:
----------------------------------------------------------------------
There are two types of polarizing filters readily available, linear and 
"circular", which have exactly the same effect photographically. But the 
metering and auto-focus sensors in certain cameras, including virtually 
all auto-focus SLRs, will not work properly with linear polarizers 
because the beam splitters used to split off the light for focusing and 
metering are polarization-dependent. Linearly-polarized light may also 
defeat the action of the Anti-aliasing filter (Low-pass filter) on the 
imaging sensor.
----------------------------------------------------------------------

I found what I expected which told me I should be able to use a linear 
polarizer on my E-M5... except for the bit about *maybe* defeating the 
anti-aliasing filter.  That was a surprise... but does it, and 
furthermore, is that a bad thing?

I'm 1300 miles away from my linear polarizer.  Anybody ever tried it?

Chuck Norcutt
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