On Tue, 14 Apr 1998 14:13, "Jim Terazawa" <jimt@xxxxxxxxxxxxxx> wrote:
>I think Lars Bergquist gave you satisfactory answer. However,
>I am not sure how to identify that you have LINEAR or CIRCULAR
>polarizor from your post. I have two circular polarizors - one
>by Hoya and other one by Kenko brands (both glasses are produced
>by Hoya glass - which is a separate subject). The reason I can
>tell they are circular pol is that they are inscribed "PL-C" on
>the rotating collar (also they came with little 'instruction
>manual' such as explaining how to use "V" triangle marker on
>the collar - sorry I don't have the manual with me).
Thanks to everyone who answered my questions. But since Polarizer
filters are new to me, Jim has raised another issue that I want
to learn. My understanding of a circular polarizer is that there
is no "direction" to it, unlike the linear polarizer; so why would
a circular polarizer need a "V" marker? And why does a circular
polarizer need to be freely rotatable on the lens?
Since now I have the filter, I'd like to learn as much about using
it as I can. And again, I appreciate all the posts on this
subject. Thanks again.
-Dan
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