Roger, CMYK and RGB are non-equivalent, and there will always be some mangling like what you describe. The CMYK color mode in PyMOL is an attempt to constrain PyMOL to using the a subset of RGB values that can be mapped reliably into the CMYK color space, at least via Photoshop. It's not a perfect solution, but it usually gives better results than trying to convert normal RGB images.
The best advice I can offer is to try changing the PyMOL colors slightly, and to then use the color adjustments in Photoshop to fix the image as best you can. Cheers, Warren -- mailto:war...@delsci.com Warren L. DeLano, Ph.D. Principal Scientist DeLano Scientific LLC Voice (650)-346-1154 Fax (650)-593-4020 > -----Original Message----- > From: pymol-users-ad...@lists.sourceforge.net > [mailto:pymol-users-ad...@lists.sourceforge.net] On Behalf Of > Roger Dodd > Sent: Thursday, September 16, 2004 4:23 AM > To: pymol-users@lists.sourceforge.net > Subject: [PyMOL] rgb to cmyk woes > > Hi all, > > I'm trying to prepare some figures for publication and of > course the journal requires them in cmyk format. I have > produced the images in pymol using the cmyk color space and > saved them as png files. However, the png files themselves > are in 24 bit rgb format if I'm correct. Trying to > subsequently convert them to cmyk format tiff files in > photoshop or coreldraw results in all the colors being > mangled (becoming duller and darker). Is there some trick to > converting to the cmyk color space without altering the > colors - I assumed working in the cmyk mode in PyMOL would > ensure this didn't occur? > > Thanks in advance for any help > > Roger Dodd > > > ------------------------------------------------------- > This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one > of 170 Project Admins to receive an Apple iPod Mini FREE for > your judgement on who ports your project to Linux PPC the > best. Sponsored by IBM. > Deadline: Sept. 24. Go here: http://sf.net/ppc_contest.php > _______________________________________________ > PyMOL-users mailing list > PyMOL-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/pymol-users >
