Re: [Gimp-print-devel] Stylus photo 870

[Robert L K. <rl...@al...>]

   Date: Sun, 7 May 2000 01:54:48 +0000
   From: Jean-Marc Verbavatz <ver...@if...>

   I've tried to work on grays. The patch below improves the gray
   balance for me.  As you can see the magenta density will increase
   by ~17% (0.85 vs 1.0) and the cyan density by ~11% (0.9 vs
   1.0). Now grays look gray. Of course, the color balance changes
   slightly as well. As the values are absolutely empirical, they may
   need to be tweaked, but they look good to me.

Careful with that.  Setting the highest value to anything other than 1
may lead to instability or other problems.

   I still see it with the latest version even on black and white
   pictures (printed in color). Therefore, it is not due to the
   images. Moreover It did not happen with gimp-print 3.1.2 (even on
   the same photographs). It occurs at low densities indeed (although
   not extremely low), but only in proximity of higher densities.
   Therefore not on flat tones, but either at transitions or in
   regions of very variable density. I haven't yet looked if it
   occurred with all the dithering algorithms (only 3 and 4).

Hmm...