----- Original Message -----
From: gfen
Subject: ZX/MZ bodies and LINEAR polarizers.


>
> Hi there,
>
> Some confusion on circular versus linear polarizers... >
> Does anyone know if the metering will definatly be off without
using the
> circular varient? And how did AF work correctly, then?

Circular polarizers are recommended for cameras that have a beam
splitter in them, to prevent cross polarization. I believe the
only Pentax that uses a beam splitter for exposure is the LX.
The AF SLRs use a beam splitter for AF operation, but not for
light metering.
The use of a regular polarizer may blind the AF to the point of
it not working anymore (you'll know this because the AF will
start to hunt), but it should not affect exposure metering, as
it is still done off the focussing screen.
At least I think this is how it is......

William Robb

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