Stopping off color occuring when shooting through glass

Discussion in 'Beyond the Basics' started by RONDAL, Sep 30, 2009.

  1. RONDAL

    RONDAL TPF Noob!

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    I decided tonite to start experimenting with some fun ideas i've had in my head.

    One such idea involved wine glasses. Problem I am finding however is you get a weird color change as you shoot through glass. Any way to avoid this? I would usually just adjust the exposure if it was straight glass, but because my glasses have colored contents it is not as easy.

    Your thoughts?

    [​IMG]


    best viewed on large to see the discolouration im talking about here;
    http://farm3.static.flickr.com/2522/3970987234_4aaeea20b5_b.jpg
     
  2. CSR Studio

    CSR Studio TPF Noob!

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    It's caused by the refraction of the glass. Have you tried lighter colors in the glasses?
     
  3. RONDAL

    RONDAL TPF Noob!

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    i have. no luck.
    what i would like is the outline of the glass still visible, but the background seen through the glass to be whiter, and not off-white as seen above.
     
  4. CSR Studio

    CSR Studio TPF Noob!

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    I know what you mean. How are you lighting it? What equipment are you using?
     
  5. musicaleCA

    musicaleCA TPF Noob!

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    Desaturate and lighten it in post? I know it's a bit of a cop-out, but it'd work.
     
  6. CSR Studio

    CSR Studio TPF Noob!

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    I was thinking along the same lines. But I don't think that would do it.
     
  7. musicaleCA

    musicaleCA TPF Noob!

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    Why not? If you're careful it should be doable...
     
  8. Garbz

    Garbz No longer a newbie, moving up!

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    Depends on your budget. Get some very fine crystal glasses and you should be good.

    From the looks of things the off colour you get is the fact that not all glass is equal. Your wine glasses are unlikely to be made of the same purified silica that your camera lens is, nore is it anti glare coated. Which also means it's not perfectly translucent.
     
  9. RONDAL

    RONDAL TPF Noob!

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    yeah they were $10 for 4 pack. not exactly top end.
     
  10. CSR Studio

    CSR Studio TPF Noob!

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    Are you lighting it from the front, top and back?
     
  11. RONDAL

    RONDAL TPF Noob!

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    front/top is done via a reflective umbrella above the subject and slightly in front of it.

    have a flash behind and below to blow out the wall.
     
  12. CSR Studio

    CSR Studio TPF Noob!

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    Try taking down the umbrella about a 1/2 stop and increasing the background light by a 1/2 and see if that helps, if it does then you can make corrections until you get it where you want it. I hate to tell you but I have shot this type of thing on film and had no problem with it. But that was a long time ago.
     

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