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What am I selecting?

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  • What am I selecting?

    I don't know if everybody's keyboards work the same way but in mine when I press CTRL ALT + 1, CTRL ALT + 2 and CTRL ALT + 3, Photoshop selects "something".
    I guess that in the first case it matches luminosity with opacity but I can't figure it out what's the other two.

  • #2
    I'm guessing here, mind you, but I suspect it's selecting the lumnosity of the individual color channels.
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    • #3
      Depends on which tool is currently selected. Often the number keys represent a percentage (1 =10%, etc.). Using that combination will indeed change which channel you are looking at (turn on your channel menu and press those keys and you will see it change channels).

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      • #4
        I think I got it. It has something to do with the spectrum.
        It seems that CTRL ALT + 2 selects from red to blue and CTRL ALT + 3 selects from red to green.

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