P3D Re: Round or Circular (polarizers)

[boris@xxxxxxxxxxxx (Boris Starosta)]

>From: Rob <lilindn@xxxxxxxxxxx>
...
>    There is a lot on confusion today about the two kinds of polarizers
>now on the market - Linear polarizers (before about 1980 merely called
>polarizers) and Circular polarizers.  Both usually come in round frames.
...   [then, on "circular polarizers"]:
>These filters to nothing of the sort.  A circular-polarized filter is
>actually a linear polarizer with a quarterplate (a depolarizing layer)
>behind it.  Perhaps a more correct term would be "polarizer-depolarizer

I'm glad someone finally answered Bob's question in a manner that makes
sense to me.  Learned something about polarizers today!  I love P3D!



Boris Starosta            boris@xxxxxxxxxxxx
                          http://www.starosta.com
usa 804 979 3930          http://www.starosta.com/3dshowcase



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