Ver 1 Are there any sharp corners on the mount? It's not circular.
Ver 2 Stand before a mirror and look at your reflection through the
polariser. Now turn the polariser back to front. Any change in what you
see? If so, it's circular.
--
Piers
-----Original Message-----
From: olympus-owner@xxxxxxxxxx [mailto:olympus-owner@xxxxxxxxxx] On Behalf
Of James Royall
Sent: 29 November 2004 22:34
To: olympus@xxxxxxxxxx
Subject: [OM] OT how to tell polarisers apart
I have a vague memory of reading about this, but no idea where. I have a
polariser of unknown type and have realised I need to ensure it's circular
before using it on my OM4. Is there a trick for doing this?
Thanks,
James
Who still has to scan his TOPE entry! Sorry Olaf
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