Best CPL?

Started Sep 26, 2012 | Discussions thread
JonhC5
Regular MemberPosts: 184
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Re: Best CPL?
In reply to Deleted1929, Sep 29, 2012

great article.

Thanks,
Jonh

sjgcit wrote:

Best is not exactly a simple term - there are a lot of ways something can be best.

Here are two articles from lenstip.com reviewing in detail many polarizing filters.

http://www.lenstip.com/115.1-article-Polarizing_filters_test.html

http://www.lenstip.com/119.1-article-Polarizing_filters_test_-_supplement.html

There's an explanation of the theory behind them as well ( detailed ).

Polarizers are often described as colour neutral, which frankly baffles me for two reasons.

Firstly there are no filters, even ND 0 filters, which are truly colour neutral. The very best ND 0 filters ( maybe Singh-Ray ) are close, but nothing is perfect.

Secondly, the function of a polarizing filter is to block light based on polarization, which is not going to be even across a frame or on every part of a scene. By definition they're going to alter the overall colour balance of a scene if they work.

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StephenG

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