With my admittedly limited experience with tri-color gums, my times are also fairly similar-- but I do think I also compensate with development time. I did make a few CMYK prints, though (with the K printed as pt/pd), but those digital transparencies generated from CMYK (as opposed to CMY) are vastly different. No need to even mark which is which, and --yes-- the differences are also easily seen onscreen. Since I didn't print the black as gum, only as platinum, I didn't really get to appreciate what a CMYK would be like-- all gum-printed. Never used RGB, though.
On Nov 20, 2008, at 1:52 PM, Marek Matusz wrote: