Dear Peter, thanks for your advices. Please see my replies to your questions below:
----------- snip --------------------------------------- On Donnerstag, 6. November 2003 23:16, Atlantic Tech Solutions wrote: > On Wed, 2003-11-05 at 07:49, Christoph Schoenherr wrote: > > Dear all, > > > > I'm intending to get custom made profiles for my inkjet > > printer for use with Scribus. Has anyone got some experience > > with how to do that? The monitor is already profiled with a > > Spyder. > > Good. I am assuming you have color set to 6500K. > > > Most of the companies offering custom made profiles assume > > that one prints their test chart out of Photoshop, but can I > > do the same procedure with the test chart loaded as an image > > in Scribus? > > > > I'm using an Epson 1270 with Generations4 inks and > > Hahnem?hle PhotoRag watercolor paper, Scribus 1.0 with lcms > > on SuSE 8.1. > > Maybe. It depends if the image is RGB or CMYK. > It's RGB. > The big difference is whether this printer is a real CMYK > printer or a RGB printer. RGB printer ? Yes, many inkjet > printer drivers expect to *receive* color info in sRGB and the > driver does the conversion to 3,4 or 6/7 inks automatically. > The printer is also RGB. > However, if it is an RGB driver printer, it might be far > simpler to open the PSD or TIFF in the GIMP and print to that > with the special GIMP print drivers without any color > corrections - except noting the type of paper. The GIMP can > open Photoshop PSD's > Yes, that's true -- but then what am I going to do with a profile based on GIMP output and not on output coming from Scribus? I've been told that it is most critical not to change the workflow *at all* once the profile being made. Please correct me if I'm wrong, and excuse my ignorance. As far as the GIMP is concerned, I don't see the possibility to use an ICC printer profile with it yet. > For CMYK printing in general: > > 1. Get lcms 1.11 > 2. Upgrade Scribus to 1.1.2. It has enhancements to the color > correction of lcms, but you need 1.11 and Scribus 1.1.1+. This > is a new tweak - black point compentsation, which helps > adjusting contrast in photos. > > Were there any special instructions beside printing from > Photoshop ? > in brief, the advice is as follows: - open the test chart in Photoshop - switch off any color corrections in the printer driver - select the paper type (usually a matte paper) - in the color management section, set the "output color space" to "Same as source" (usually Adobe RGB or sRGB) - print the file - have the printout measured - once you have got the profile, set "output color space" to this profile and leave the printer driver as it were, with color corrections switched off. So I was wondering if this would work in Scribus as well: - printing a test chart from Scribus with color management switched off to get something like a "raw", unbiased output from the printer - measuring the printout and making the profile - using this profile in Scribus with color management turned on again, selcting this profile as printer profile Thanks for any advice, Yours, Christoph
