Does a polarizer work with reflections off of glass?

Discussion in 'Photography Beginners' Forum' started by Baaaark, Jul 25, 2009.

  1. Baaaark

    Baaaark TPF Noob!

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    I know it doesn't work from reflections off of metal due to (insert physics principle here), but I never see anything mentioned about glass. Yet, I get glare off of glass. Then I started thinking, "It wouldn't reduce the glare off of a mirror, so why would it glass? But then I didn't know if it was the glass or the reflecting substance underneath it.

    And then I thought I was thinking too much, and decided to ask you guys.
     
  2. musicaleCA

    musicaleCA TPF Noob!

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    Yes. As long as the reflection is at the right angle, a CPL will reduce reflections from glass.

    *sigh* I really need to get CPL's for my lenses...in time, perhaps.
     
  3. Baaaark

    Baaaark TPF Noob!

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    will it work off of a mirror?
     
  4. Markw

    Markw No longer a newbie, moving up!

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  5. Baaaark

    Baaaark TPF Noob!

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    I totally forgot I asked that in another thread! Thank you for redirecting me to it. I'd hate to think someone went through all that trouble to answer my question only to have me not see it! :D
     
  6. Markw

    Markw No longer a newbie, moving up!

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    I didnt even remember it was you that posted it! I just remember answering it in that thread :lol:

    Mark
     
  7. Dwig

    Dwig TPF Noob!

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    Polarizers are almost 100% effective in eliminating reflections from smooth glass when your line of site to the glare is a 45 degree angle to the surface of the glass. They are 0% effective when the reflections along a line of sight near 90 degrees to the surface. Shoot straight into a window and a polarizer will not help to eliminated the reflection of the camera and photographer. Shoot at a 45 degree angle and it can eliminate the reflections.
     

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