On 12/22/2011 11:10 AM, Patrick Noffke wrote: >> >> > Another reason why I think this is incorrect behavior is with respect to > gradients. If you create a rectangle with Black R=G=B=0 on the ends, and a > dark red (for example), with R=75, G= 45, B=45 in the middle, then when you > make the PDF, the black ends will get K only, and the middle will have > 4-color, with the CMYK coverage depending on the output intent (for the > SWOPcoated5_240 TAC profile, the middle red CMYK is (40%, 70%, 36%, 76%)). > If you want to print this on a high-quality device, which is capable of > handling high TAC levels, the black ends will be too light from what the > author intends. Or to put it another way, if you work with RGB colors, to > get a nice saturated black on a high quality device, you have to create a > color like R=0, G=1, B=0. > > What do others think? I'm happy to file a bug report (with a patch), if > you think it makes sense to change the behavior. > From time to time, we have this discussion, about what black is, how black black is, etc. You might consider whether to use rich black in your instance:
http://wiki.scribus.net/canvas/What_is_Rich_Black%3F but I don't think that Scribus should make this decision for you. If someone such as yourself has knowledge of and uses a high-quality printer, then you would want to be aware of options, but even then, there are various options. Greg
