Terry, The best bet is a hack in Excel of an existing profile. If you want a profile that simulates real-world printing, the challenge is to simulate overprints and trapping with any accuracy. For that you need a good grasp of hinted Neugebauer, but it's never the same as working from actual printed characterization data. If all you want is something that shows gamut boundary, not an actual spring profile, the Excel hack is relatively easy. Don ........................................................ Don Hutcheson, President HutchColor, LLC Washington, NJ 07882, USA office: (908) 689 7403 cell: (908) 500 0341 ........................................................ On Dec 19, 2014, at 15:00 , colorsync-users-request@lists.apple.com wrote:

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Today's Topics:

1. Creating synthetic CMYK profiles? (Terence Wyse)

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Message: 1 Date: Fri, 19 Dec 2014 14:46:23 -0500 From: Terence Wyse <wyseconsul@mac.com> To: "'colorsync-users?lists.apple.com' List" <colorsync-users@lists.apple.com> Subject: Creating synthetic CMYK profiles? Message-ID: <F8CDC5F1-4060-4980-842E-181C487A2EE1@mac.com> Content-Type: text/plain; charset=utf-8

While creating custom or synthetic RGB profiles is pretty straightforward, does anyone here know of any tools to create synthetic *CMYK* profiles?

I’m looking for something that will allow specifying of CMYK primaries and secondaries and a customizable TRC and then build an ICC profile.

The intent here is to build something like a “reference” or simulation profile for digital press and/or inkjet devices. I’ve gone through all the ISO 15339 CRPC profiles but none of them have the kind of gamut boundaries that I’m looking for..

Only tool that I can think of at the moment is the rather antiquated Custom CMYK tool in that’s been in Photoshop for a very long time…I’m not confident it will give me what I need.

Regards, Terry Wyse

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End of Colorsync-users Digest, Vol 11, Issue 167 ************************************************