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
  • Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com;s=gamma; h=domainkey-signature:mime-version:received:date:message-id:subject:from:to:content-type:content-transfer-encoding;bh=BtOaVeb0YuQaDJRC48v8zLQZZK0NlyHZDRcwTtoVK+k=;b=xdf1mDVXzLl7LpwSL11YqIwU+afpeFAbe0zkr1GXpWvRrO247mxePwzPWWyFjNR49W0D7ERqGvdVXIVfCqOGqtMAAcY10WrJBKiwkir0fGgVFLWfLPHaTS19XpmATlUYX5WGcdt0tlhBs6srhAlVOq7WR7bM/2jtW57y1+5823E=
  • Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma;h=mime-version:date:message-id:subject:from:to:content-type:content-transfer-encoding;b=IJAGxuSRnyaHStVO1hTCCsZLkIu3ZTFRCK3VUtGcgaCTjg7IgO/jb0jXsh1Jph+BdwAGC3v2OW3QUJckNgkPraUbnNiyS15PWlSI7mk5jKld9DaJf9gMUwLfv58fcphi5uMvspuMUcizzV9xRA830r96Xk35DB0pyZoTafCAxeI=
  • List-id: alt-photo-process mailing list <alt-photo-process-l@sask.usask.ca>
  • Reply-to: alt-photo-process-l@usask.ca

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.