Is there a white balance control in brain ?

Discussion in 'Optometry Archives' started by M.Barren, Aug 27, 2005.

  1. M.Barren

    M.Barren Guest


    I noticed somethin the other day when I closed my eyes for about a
    minute or two under very bright sunlight and after I opened my eyes
    everything looked bluish for a while until it went back to normal. The
    same kind of thing happens in digital cameras. If you've ever set the
    white balance of your digital camera to tungsten light condition, and
    take a photo in bright light of day, your photo will have an overal
    bluish effect.

    I was wondering if these two are related and that's what happens with
    human vision as well !

    M.Barren, Aug 27, 2005
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  2. M.Barren

    S Akky Guest

    put fingers to keyboard and typed...

    What you experienced was a 'bleaching' of the red-sensitive cones, like an
    after image. Therefore what you saw afterwards had a blueish (greenish)

    In terms of white balance, look up "colour constancy" (or "color
    constancy" if you can't spell!) ;-)
    S Akky, Aug 28, 2005
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