How do I use one of the RGB channels as the data for a black and white photo?

Discussion in 'Photoshop' started by Don Quixote, Nov 10, 2004.

  1. Don Quixote

    Don Quixote Guest

    Usually one of the three channels would be more suitable for black and
    white, but how do I use it?
    Don Quixote, Nov 10, 2004
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  2. Don Quixote

    Marsupilami Guest

    Delete the other channels?

    Houba houba.
    "Le numéro reçu ne correspond pas à une relation exploitée en automatique"
    Kraftwerk-"The telephone call"
    Marsupilami, Nov 10, 2004
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  3. Don Quixote

    RSD99 Guest

    See Russell Brown's tutorial "Seeing in Black & White" ...

    Another way would be to go to Saturation and turn it down to zero ...

    Another way would be to change the image's Mode to Lab ... and delete the a
    and b channels ...

    So on .... last time I looked there were about 5.297 ways to make an RGB
    image into B&W.
    RSD99, Nov 10, 2004
  4. Don Quixote

    Hecate Guest

    Blend using the channel mixer.
    Hecate, Nov 11, 2004
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