Linear v Circular Polarizers

Started Feb 8, 2013 | Discussions thread
Tazz93 Senior Member • Posts: 1,896
Circular Polarizer Shootout

Big Ga wrote:

And also.....

What is different about a Käsemann polarizing filter?
Of all the B+W polarizing filters which we offer, the Käsemann configuration has the highest optical quality.

Ok, so different polarisers have different 'optical quality' (whatever that means)

For what its worth, here is the best test I've found for polarizers, all circular,

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