10 Replies Latest reply on Mar 9, 2013 7:50 AM by MikeBarret

    Photoshop CS4 Channel  Apply Image


           Good evening, everybody. I am a beginner of Photoshop and I am really interested in Photoshop.

           Here is a big challenge I have met in the "Image>Apply Image..."

           As it's shown in the picture, I use the Channel Alpha1 to alter the RGB Compound Channel and the Blending mode is ADD. And I can understand the fundamental of the above operation. Then question occur:

          I don't get a full understanding of the Chek Box "Mask..."  and I don't konw what it is used for. And what about some parameters "Image", "Channel", "Layser" about the "Mask..." Can you explain the secret of it to me? It will be much better if you could give me the fundamental or algorithm of it.

          I will really appreciate your reply.

                                                                                                                     -----From a Ps Loyal fans