P3D Re: Circular or Round?

[michaelk@xxxxxxxxxxx (Michael Kersenbrock)]

> What's the difference, and forgive me, I am not sure I understand what you
> mean. Are you referring to a circular polarizer as in circular shape or a
> circular polarizer as in a linear polarizer with the combined retarder to
> make it a circular polarizer - a specific kind of polarizer filter.

A filter that does circular polarization.  I understand these are made
for cameras nowdays because linear polarized ones can cause problems
with modern camera operation (don't recall if it was with autofocus
or fancy metering schemes).

I have no idea if it'd be as effective to get the "polarizer effect"
inasmuch I've not used the circulars before, only the linears (and then
only in 2D).  However it'd solve the problem of buying small sized filters
(for price) and having to turn them in precise unison -- they'd only have to 
be mounted whichever way and left stationary.  Probably couldn't get them
in series V format however.  :-(

Mike K.

> 
> Cheers
> 
> RM
> 
> 
> 


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