I'm facing something similar. I would like to design a "synthetic" CMYK space to use as a simulation profile...but lack the tools to do it....to define the primaries and secondaries and a particular TRC and then have it build this ideal CMYK simulation profile...but how? Sent from Terry's iPad Mini
On Mar 3, 2016, at 7:57 PM, Roger Breton <graxx@videotron.ca> wrote:
I need to pursue the following line of reasoning. Here's the situation.
I have a superlative CMYK to CMYK RIP.
I have a characterization of its "full gamut" on Brand X paper. Rather well linearized but not rigorously spaced when you look at it in 3D.
My problem is, I want to "design" a CMYK gamut around this particular CMYK characterization?
A CMYK gamut that would fit it as close as possible.
My plan is to use this fitted CMYK space for converting into from, say, Photoshop, and then, later convert from that fitted CMYK space to the characterized full gamut of the printer in the RIP.
So the conversion would go like :
A) say I have swell RGB imagery in some "wide" RGB spaces;
B) I convert to TO that sort of intermediary space in Photoshop ;
B) and then, in the RIP, the conversion would go from that fitted CMYK space to "full gamut" of the printer.
Using some rudimentary tools I have at my disposal, I already undertook to modify what I consider a well-behaved "large gamut" CMYK space, such as CRPC-7.
Alas, the tools I use only allow modification of the CMYK colors - not the RGB, which would allow the better fit to the "full gamut" I'm trying to mimic.
I already compared AdobeRGB, eciRGB, and lot's of other RGB spaces as potential candidates, instead of insisting on an CMYK space but I find them all way too big.
Sounds like a trivial problem? There must be something I'm missing.
I know some RIP allow modeling the printer as an RGB device such as GMG but not this one, not that I know of, at least.
If all fails, I'll end up making an ICC profile out of this "full gamut" characterization to convert images straight into it.
Hope my life is not too complicated for you ;-)
/ Roger
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