Saving an image with only 1 channel...

Discussion in 'Design and Graphics' started by mac3687, Dec 21, 2007.

  1. mac3687 macrumors member

    Nov 22, 2006
    There is an effect I am going for that I'm having difficulty with, and because of my relatively little experience with graphic design, it may be simple to solve for someone more experienced. I want to screen print a portrait, but do it three times, slightly off of one another, one for cyan, magenta, and yellow, with no black. I'd like to do it in the halftone pattern, which I would just end up getting from the Rasterbator website. The problem is that in Photoshop I can view the separate channels, but I don't know how to save the image so that it's only the cyan or only the magenta, etc. Everytime I save it, even with the other channels turned off, I end up with the complete color image. Does anyone know how to save the individual channel as an image?
  2. Peace macrumors Core


    Apr 1, 2005
    Space--The ONLY Frontier
    I think you need to convert each layer ( image ) as a single channel.
  3. Shimiko macrumors newbie

    Dec 21, 2007
    Open the CMYK file, then in the channels palette select the cyan channel, then do the following:
    Apple A (select all)
    Apple C (copy)
    Apple N (new file)
    Apple V (paste)

    You'll then be left with a single channel greyscale image, save it as "imagename-cyan" then repeat the process for the other channels.

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