Polarizing filter use question

[travis_h]

I am kind of confused as to how a polarizing filter should be used. I understand that there are two lenses and you can rotate one so the lines are either perpendicular or parallel. My question is, which way do I want to have it rotated. I film mostly snow scenes, so I am trying to avoid overexposure by using a polarizer. I have zoomed in until all I can see is one area of snow and then rotated the filter. At one orientation it seems like the filter is doing nothing and at the other orientation, it gives the snow a blue tint. Another question that I have is, when should I be setting the white balance during this process? Thanks.

[Anonymous]

look into neutral density filters too, that will help with exposure in snow

[Author]

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