Thanks so much for all your responses. I think I have a better understanding of color management, especially after reading http://www.boscarol.com/pages/cms_eng/. So far, my wife has contacted our brother-in-law who has photoshop. He was able to supply her with rgb and cmyk values from the pantones. I assume he was using the SWOP profiles.
Marti, I had a little programmer itch I wanted to scratch with lcms. What I'd like to do is create a command-line program that queried profiles for values: 1) say I have rgb values, what's the lab values in a particular input profile 2) I have lab values, what's the cmyk values for a particular output profile Is this feasible with little cms? Whether it's usefull is another question, but I just thought I could get my feet wet this way... Thanks for all your advice Jeff --- Marti Maria <[EMAIL PROTECTED]> wrote: > > Hi, > > I assume you want the simplest way, and really don't worry about exact > precision. > This is not an issue here, since pantone certification does NOT always tie > colors names > with exact Lab values. You can use colorimetry only if all used spot colors > are inside > CMYK gamut, else you have to preserve spacing and things become a lot more > complex. > > So, first step would be to check what printer/emulation the CMYK is in. > Probably > SWOP if artwork targets press. Next step would be to see if all used spot > colors lies > inside gamut. If all used pantone colors are inside gamut then you can safely > use > colorimetric values. > > 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 > The little cms project > http://www.littlecms.com > [EMAIL PROTECTED] ===== J. Horner Software www.jhorner.com 615-347-6899 ------------------------------------------------------- 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
