6 Replies Latest reply on Oct 29, 2017 8:44 AM by JJMack

    How does Photoshop determine the new RGB pixel values when the top layer's opacity is lowered?

    FLCCjack

      For example, the top layer's RGB values for a given pixel are:

      R=11
      G=208
      B=206

       

      And the same pixel on the layer under it are (found by turning of visibility of the top layer):

      R= 195

      G=57

      B=63

       

      When the top layer's visibility is turned back on and it's opacity is changed to 80%, the new values for the same pixel are now:

      R=71

      G=184

      B=183

       

      The question is: How does Photoshop calculate the new values?

       

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