Dan,
And I assume you know why that would be incorrect usage?
Because (hopefully!) no "lensing" occurs in a filter (which is supposed
to have flat, plane-parallel surfaces).
Cheers,
Igor
Daniel J. Matyola Thu, 23 Jul 2015 07:36:01 -0700 wrote:
I thought that "PL" stood for "polarizing lens."
Dan Matyola
http://www.pentaxphotogallery.com/danieljmatyola
On Thu, Jul 23, 2015 at 10:32 AM, Igor PDML-StR wrote:
<...>
Now, my 3 guesses that I mentioned yesterday but didn't write to avoid any
bias were: lens, light, and luminescence that would be in the scientific
term "circularly polarized luminescence". Obviously, none of these would be
correct in "CPL filter".
Igor
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