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The light path for the autofocus in an SLR (image) sends it through a semi-transparent window in the middle of the mirror (in effect a beam splitter). Light, bouncing off of or being transmitted the mirror will become partially linearly polarized itself (much like the light off of a leaf or water). If the light incoming is linearly polarized, some of that ...


Every bit of glass you place in front of the lens will cause flare. In general, expensive filters cause less flare than cheap ones, and fewer filters cause less flare than more filters. When you think lens flare, you may think of the circles or shapes that appear in frame as reflections of the sun, but lens flare refers to all unwanted light coming from ...


Using a polarization filter does actually have an effect on fur. You can see an example in this article: How to Photograph Your Dog: 9 – Polarizers for Perfect Pet Portraits However, the effect doesn't help your case at all. What you would need would be to reduce the reflected light from the white fur while affecting the rest of the scene less. The ...


There are two components to the light being reflected off the fur. The predominant one is likely diffuse scattering. A polarizer won't help with that. There may be some more "reflection" looking sheen, especially if the light is coming from somewhat behind the cat. That probably is polarized, so a polarizing filter should be able to accentuate or ...

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