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
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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On 4 Mar 2016, at 10:22, Terence Wyse <wyseconsul@mac.com> wrote:
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?
Have you seen GMG’s ColorMaster Terry? <http://www.gmgcolor.com/fileadmin/user_upload/PDF/data_sheets/ColorMaster_EN.pdf> -- Martin Orpen Idea Digital Imaging Ltd
Thanks Martin. I've been a GMG fanboy for a long time but have been away from it for 3-4 years since getting out of the consulting racket and getting a real job. :-) Anyway, thanks for bring this to my attention.....I'll check it out. Regards, Terry Sent from Terry's iPad Mini
On Mar 4, 2016, at 5:54 AM, Martin Orpen <martin@idea-digital.com> wrote:
On 4 Mar 2016, at 10:22, Terence Wyse <wyseconsul@mac.com> wrote:
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?
Have you seen GMG’s ColorMaster Terry?
<http://www.gmgcolor.com/fileadmin/user_upload/PDF/data_sheets/ColorMaster_EN.pdf>
-- Martin Orpen Idea Digital Imaging Ltd _______________________________________________ Do not post admin requests to the list. They will be ignored. Colorsync-users mailing list (Colorsync-users@lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/colorsync-users/wyseconsul%40mac.com
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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?
“Hey Mr Peabody! Set the wayback machine to 1992!" Photoshop>Edit>ColorSettings>CMYK>CustomCMYK... It’s still there, ready to please! Scott Martin www.on-sight.com <http://www.on-sight.com/>
Worth the look, Scott! Thank's. / Roger -----Original Message----- From: colorsync-users-bounces+graxx=videotron.ca@lists.apple.com [mailto:colorsync-users-bounces+graxx=videotron.ca@lists.apple.com] On Behalf Of Scott Martin Sent: 4 mars 2016 09:04 To: ColorSync <colorsync-users@lists.apple.com> Subject: Re: Mundane color problem
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?
“Hey Mr Peabody! Set the wayback machine to 1992!" Photoshop>Edit>ColorSettings>CMYK>CustomCMYK... It’s still there, ready to please! Scott Martin www.on-sight.com <http://www.on-sight.com/>
Well, it was worth the try but it's similar in its "shortcomings" to my modified CRPC-7 ++ profile. Not enough coverage towards the blues and greens. Was worth the try, Scott. / Roger -----Original Message----- From: colorsync-users-bounces+graxx=videotron.ca@lists.apple.com [mailto:colorsync-users-bounces+graxx=videotron.ca@lists.apple.com] On Behalf Of Scott Martin Sent: 4 mars 2016 09:04 To: ColorSync <colorsync-users@lists.apple.com> Subject: Re: Mundane color problem
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?
“Hey Mr Peabody! Set the wayback machine to 1992!" Photoshop>Edit>ColorSettings>CMYK>CustomCMYK... It’s still there, ready to please! Scott Martin www.on-sight.com <http://www.on-sight.com/>
Roger, maybe you find a suitable candidate here. http://www.fogra.org/index.php?menuid=586&reporeid=373&getlang=en Best regards Claas
Am 04.03.2016 um 15:33 schrieb scott@on-sight.com:
Well, it was worth the try but it's similar in its "shortcomings" to my modified CRPC-7 ++ profile. Not enough coverage towards the blues and greens.
And you went to InkColors>Custom…. and entered your own Lab primaries?
Scott Martin www.on-sight.com
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Claas, Danke shön fur diese suggestions, I did not know about these "Large-gamut" profiles. But I still don't get the blue and green saturation ich suche from alles those large-gamut profiles... MfG / Roger -----Original Message----- From: colorsync-users-bounces+graxx=videotron.ca@lists.apple.com [mailto:colorsync-users-bounces+graxx=videotron.ca@lists.apple.com] On Behalf Of Claas Bickeböller Sent: 4 mars 2016 10:23 To: ColorSync <colorsync-users@lists.apple.com> Subject: Re: Mundane color problem Roger, maybe you find a suitable candidate here. http://www.fogra.org/index.php?menuid=586&reporeid=373&getlang=en Best regards Claas
Yes, I looked at that before…..and it was a pain-in-the-GCR. :-) If I exhaust other options, I may have to look at it again. Terry
On Mar 4, 2016, at 9:03 AM, Scott Martin <scott@on-sight.com> wrote:
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?
“Hey Mr Peabody! Set the wayback machine to 1992!"
Photoshop>Edit>ColorSettings>CMYK>CustomCMYK...
It’s still there, ready to please!
Scott Martin www.on-sight.com <http://www.on-sight.com/>
participants (6)
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Claas Bickeböller
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Martin Orpen
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Roger Breton
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Scott Martin
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scott＠on-sight.com
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Terence Wyse