[Gimp-print-devel] Latest results

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

My latest test print on the 870 is much better than the previous one.
Almost all of the artifacts have entirely gone away.  There's the
slightest of reddish casts in some of the gray midtones, but nothing
like last time.  It looks much more like a true photograph at this
point.  I'd say an 8x10 is very close to a photographic print from 35
mm (with certain exceptions), but it wouldn't match up to a print from
medium format.

I'd like people with other variable dot size printers to try this.  I
think it will improve printing on all such printers.

There may be a slight regression on the EX.  There's definitely a bit
of a pink (magenta?) cast.  Beyond that it's hard to tell for sure.

If you use 1440x720 dpi highest quality on the new printers, you may
find you need to boost density slightly.  The general consensus has
been that 1.5 is the correct density for the ESP 870; I found I needed
1.7.  You may not need to use this mode.  I found that my test
patterns showed banding with normal 1440x720 that went away at highest
quality (using Epson coated paper), but my test prints of the PDI
target showed very little banding (on Epson photo paper) on either
setting, although highest quality was better under very close
inspection.

Thomas, could you play around with your new matrix some more?  It's
not in, because having only one matrix caused problems, but it does
look promising.  It really bloats the executable, though.