White light temperature

Discussion in 'Photography Beginners' Forum' started by Ronaldo, Feb 9, 2012.

  1. Ronaldo

    Ronaldo TPF Noob!

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    I've been reading about this - - and still don't get it.

    Can someone please 'splain what this is???

    tia


     
  2. Big Mike

    Big Mike I am Big, I am Mike Staff Member Supporting Member

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  3. KmH

    KmH In memoriam Supporting Member

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    And look at these links - Understanding White Balance
    Tutorials – Color Perception
    Overview of Color Management
    Color Management: Understanding Color Spaces
    Color Management: Color Space Conversion

    Many things we consider white, aren't actually white.

    For the purposes of the RGB color model that is used in digital photography, white is - Red=255, Green=255, Blue=255.

    R=255, G=240, B=255 isn't white. R=250, G=250,B=250 isn't white either. But, when the RGB values are all the same wew have a tone of neutral gray.
    In the RGB model black is R=0, G=0, B=0.

    Sunlight is actually a yellowish tone, and isn't white.

    Most flash units fairly closely approximate sunlight
     
  4. Tony S

    Tony S Been spending a lot of time on here!

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