Why "Circular" Polarizing Filter

Started Sep 13, 2012 | Discussions thread
Sanpaku
Forum MemberPosts: 62
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Re: Why "Circular" Polarizing Filter
In reply to Lobalobo, Sep 13, 2012

Linear polarization is all you need for cameras with only contrast detection autofocus.

I'm not sure about newer (non-m43) mirrorless cameras with on sensor phase detection autofocus.

That said, its very hard to find any linear polarizers with anti-reflective multicoating and high transmission. That's why I went with a circular polarizer.

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