U of S | Mailing List Archive | alt-photo-process-l | Custom color-separations in Photoshop?

Custom color-separations in Photoshop?

  • To: alt-photo-process-l@usask.ca
  • Subject: Custom color-separations in Photoshop?
  • From: Keith Gerling <keith.gerling@gmail.com>
  • Date: Sat, 24 Jan 2009 11:49:49 -0600
  • Comments: "alt-photo-process mailing list"
  • Delivered-to: alt-photo-process-l-archive@www.usask.ca
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I was wondering if there was any method in Photoshop, or with a
Photoshop plugin where one could perform custom color separations.
The RGB and CMYK channels are universal ways of splitting a full color
image into 3 or four standard colors.  Wouldn't it be possible to
split an image into components of Purple, Orange and Green, for
instance?  It would be like turning the color wheel a notch.
Conceivably, if all the color information can be conveyed in CMYK, it
ought to be  accurately conveyed with other color channels as well.
Or am I missing something?

This could provide all kinds of interesting possibilities for
tri-color gum printing.