On Thu, 2004-07-08 at 23:07, Marti Maria wrote: > Hi, > [snip] > > Photoshop can give you SWOP (or whatever) CMYK for given spot color names. > If you need just a few colors post here the names and I will give you the CMYK > values. Remember first to check if we are dealing with SWOP (important!) > > Hope this helps > Marti Maria
this discussion completely fascinates me, as i realized about two years ago: 1) F/LOSS does not support pantone spot colors. 2) at that time, it did not even support CMYK offset standards, such as US newsprint SWOP, eurstandard etc. have begun to see this being supported in scribus, via lcms but not yet in inkscape. 3) i don't think pantone would be supported in a gpl or LGPL way for FLOSS. this because pantone color sytems are copyrighted, patented, and given under a license to whichever commercial software has to use it. pantone even sells a separate and bigger collection of its matching systems as a software, that plugs into various software, and so on. so why would they give the specs away free, and with freedom. 4) i have often thought about this problem, and realized this workflow of going to photoshop, look up a color, come back, mark it. is counter-productive. 5) for artwork i create where i handle the spot-color separations, the task is easy. i can pick up any representative color to a pantone number given by a client, get the proofs approved, and then create black-and-white spots, marking the actual ink to use as the pantone name, and leave it to the print shop or bureau to use that ink can and match the colors in the printed job. 6) for artwork where a pantone color has to be used in job that is cmyk-separated, marti's approach is reasonably correct, with calibration, etc. however, you could add one more process: purchase a spectrophotometer, physically measure the pantone color (from the pantone swatches you go buy from an art shop) and key those values in to a color-calibrated, color-managed (lcms) application. you could simply read the value off a customer supplied sample too. i don't use a spectrophotometer yet, as i haven't discovered yet which one works under gnulinux. however, a scientist and researcher at http://www.iucaa.ernet.in/ [The Inter-University Centre for Astronomy and Astrophysics (IUCAA) ] in pune, india, told me he custom-wrote a program to get this working under gnulinux, *nix, *bsd, whatever. i requested him to publish it on the web, but haven't heard from him yet (too busy peering into outer-space to worry about us lesser mortals, i guess :-) ) otoh, if someone on this list knows an affordable spectrophotometer that works, lemme know. 7) finally, the solution i propose for this problem is simple: i wish to start a project in the spirit of FLOSS, published under an LGPL or whatever license you feel is more contextual. the project is a realworld project: a) take the standard unix color names in a system (also borrowed by web hexcode II) and add more colors to this system. b) take a calibrated monitor, use a spectrophotometer, and measure their colors. c) publish the measurements, publish the specs, and everything, under a LGPL. d) encourage people to write plug-ins for cinepaint, gimp, inkscape, scribus, and any other app that requires it (something like the ladspa of colors: http://www.ladspa.org/), heck! even for the OS. e) more importantly, let anyone anywhere, produce swatches, produce and print color reference books, perforated color swatches, and whatever reference material they like, in the physical world. they can do this royalty-free, non-exclusive, and sell at whatever price they like, letting the market forces decide. f) certifiying that somebody's realworld reference sheet conforms and reproduces the colors sufficiently accurately is essential. i leave this to the opensource community, its organizations, (OSDN?) its players (HP, IBM, Cinepaint, LCMS?) to figure out how to put in place an infrastructure for doing this. i freely admit, i am clueless. i have this idea, and wish to share it. g) the name of the project could be interesting: OpenPant, or PantOpen, hehehehehe. but then again,a name has to be chosen after some research and evaluation. [google for pantopen shows it as the name of some chemical in pharmaceuticals...] finally, this project does not really compete with any pantone or several other ways of color labelling and communication systems. in fact, all of them exist concurrently in the market, and even in software. just that no one thought of one built ground up for the floss community. the use of the l-gpl allows people to use these in non-free software as well, and in other devices, such as symbian cellphones, etc. i guess one of you could post this idea to slashdot as well, but the time has come to take this further. :-) LL ------------------------------------------------------- This SF.Net email sponsored by Black Hat Briefings & Training. Attend Black Hat Briefings & Training, Las Vegas July 24-29 - digital self defense, top technical experts, no vendor pitches, unmatched networking opportunities. Visit www.blackhat.com _______________________________________________ Lcms-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/lcms-user
