2009/1/15 John Culleton <john at wexfordpress.com>: > On Wednesday 14 January 2009 05:58:48 pm minombresbond wrote: >> hi >> >> I'm graphic designer from argentina, and user of free software, my >> name is Juan Su?rez >> >> many times I need design simple vectorial works (like a logo) when >> acurate control of cmyk values, for example, a figure with radial >> gradient from 100/60/0/0 to 100/60/0/40, I can draw it in Scribus >> and export to pdf to printing ok, or export to RGB bitmap or as rgb >> svg to work in inkscape etc, >> >> but how can I make a cmyk bitmap image from cmyk vectorial art >> from scribus? like a 'exporting to cmyk tiff' feature? if I export >> to RGB bitmap, and convert to cmyk space (with imagemagick or gimp >> separate pluggin, with icc profile), the result is that >> CMYK-to-RGB-to-CMYK ever change the original values, specially the >> cmyk colors with zero value in any C M or Y, and high K: in this >> case >> >> CMYK:100/60/0/40 to RGB:10/40/97 to CMYK:100/76/29/16 >> V V >> V V >> CMYK:100/60/0/0 to RGB:33/66/148 to CMYK:99/60/4/0 >> >> its really differents gradients and colors! >> >> the solution: implementing a *export to cmyk bitmap* feature! :) >> >> Scribus is the only mature vectorial software where a designer can >> draw any vectorial art whit colors and gradients in CMYK values >> (and thinking in the offset machine!), and if is there any problem >> with the pdf format in the filming provider, as far as I was, no >> other method to export the artwork! I think that is an important >> issue >> >> my actual solution: export to cmyk pdf and use ghostscript to >> generate a cmyk separation to tiff device: >> >> gs -dBATCH -dNOPAUSE -sDEVICE=tiffsep -dDOINTERPOLATE >> -dTextAlphaBits=4 -dGraphicsAlphaBits=4 -sOutputFile=output.tif >> -r120 -MaxSeparations=8 example.pdf >> >> (seen on this page: http://wiki.contextgarden.net/Colors I have no >> idea about ghostcript!) >> >> this gs command generate output.tif and four c,M,Y,K grayscale >> outputs tifs, work fine with >> >> and I can re-import the cmyk tif to scribus artwork >> >> this excentric export to cmyk tiff is very usefull to my, thanks! >> >> saludos! sorry my bad english >> >> _______________________________________________ >> scribus mailing list >> scribus at lists.scribus.info >> http://lists.scribus.info/mailman/listinfo/scribus > > The tools in ImageMagick can be helpful here, specifically the convert > command.
I try cmyk pdf to cmyk tif with imagemagick, but I get only a cmyk/rgb/cmyk conversion thanks! > -- pero solo pude recorrer la mitad del camino > John Culleton > Resources for every author and publisher: > http://wexfordpress.com/tex/shortlist.pdf > http://wexfordpress.com/tex/packagers.pdf > http://www.creativemindspress.com/newbiefaq.htm > http://www.gropenassoc.com/TopLevelPages/reference%20desk.htm > > _______________________________________________ > scribus mailing list > scribus at lists.scribus.info > http://lists.scribus.info/mailman/listinfo/scribus >
