It is a cross polarizer.
Actually two different polarizing filters.
There is a center polarizer over the lens and a doughnut polarizer over the
flash that is 90 degrees out of phase.
That is what stops the reflections off of things like watch crystals.
----- Original Message -----
From: "Johann Thorsson" <johann@xxxxxxxx>
To: <olympus@xxxxxxxxxx>
Sent: Wednesday, July 12, 2006 5:08 PM
Subject: [OM] Filters for T-10
>
> Hi you gurus, I am wondering if the polarizer filter for the T-10
> ringflash
> is linear or circular, does anybody know that?
>
> J
>
>
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