reflection reduction

Discussion in 'Beyond the Basics' started by grafxman, May 31, 2010.

  1. grafxman

    grafxman TPF Supporters Supporting Member

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    I can't seem to do anything to eliminate or even reduce reflections from transparent plastic materials. My circular polarizing filters do a decent job on glass and water but are completely useless when I encounter plastic. Anybody have any ideas?
     
  2. KmH

    KmH Helping photographers learn to fish Supporting Member

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    LIGHT: Science and Magic. An Introduction To Photographic Lighting. By Hunter, Biver, and Faqua.
     
  3. grafxman

    grafxman TPF Supporters Supporting Member

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    Will the book tell me how to eliminate reflections like these:

    [​IMG]

    [​IMG]


    I realize if one is in complete control of the light then reflections can be controlled however, as you can see from the photos, I am frequently in situations where i have little or no control.
     
  4. epatsellis

    epatsellis TPF Noob!

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    yup, and more. polarization is most effective around 30 degrees from the reflecting surface. Another approach you can use is to use a rubber lens hood, and hold it tight to the glass, so no light is reflected, with a longerish lens you won't even know the glass is there. With shorter lenses, you need to be sure the glass is clean.
     
  5. grafxman

    grafxman TPF Supporters Supporting Member

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    Thanks everyone. The book's on order from Amazon.
     
  6. gsgary

    gsgary Been spending a lot of time on here!

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  7. pbelarge

    pbelarge TPF Noob!

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    I like what I read in the review, it looks more like a book of information than a book written for sales.

    Thanks!
     
  8. KmH

    KmH Helping photographers learn to fish Supporting Member

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    When you don't have control of the light, there are limits to what you can do.

    There is also a difference between reflections off smooth translucent surfaces, and shooting through various substances because they all have different refractive indexes and properties.
     
    Last edited: Jun 2, 2010
  9. grafxman

    grafxman TPF Supporters Supporting Member

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  10. Selina

    Selina TPF Noob!

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    The effect of particularities in digital images. Our approach relies on a simple modification of the capture setup: a multi-flash camera is used to take multiple pictures of the scene, each one with a differently positioned light source. We then formulate the problem of specular highlights reduction as solving a Poisson equation on a gradient field obtained from the input images. Experimental results are demonstrated on real and synthetic images. The entire setup can be conceivably packaged into a self-contained device, no larger than existing digital cameras.
     

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