[argyllcms] Re: Argyll 1.5.1: artifacts in dark shadows
- From: Alberto Ferrante <alberto.ferrante@xxxxxxxxxx>
- To: "argyllcms@xxxxxxxxxxxxx" <argyllcms@xxxxxxxxxxxxx>
- Date: Mon, 25 Mar 2013 21:03:55 +0100
Graeme Gill wrote:
> So what I suggest is: Don't use colorimetric if you want a perceptual
> mapping between your source and destination. Use a gamut mapping that
> deals properly with mapping white and black. You can do this either
> by using "colprof -s source.icc", colprof -S source.icc",
> or by creating a device link using "collink -G". You can control what
> intent the perceptual table or device link is created with using the
> appropriate intent flags.
Graeme,
I tried using colprof -S, but that does not seem to help. The new
profile is much bigger (as file size), but there is no difference in how
the shadows are rendered. What I have done is the following:
dispcal -t6500 -gs -b100 -ql -v -e1 -yl -o eizoCX240-pre.icm
eizoCX240-riscalda
dispcal -t6500 -gs -b100 -Ibw -qh -v -e2 -yl eizoCX240
targen -v -d3 -G -e20 -g 256 -c eizoCX240-pre.icm -f3000 eizoCX240
dispread -v -y l -Ibw -k eizoCX240.cal eizoCX240
colprof -A "Eizo" -M "CX240" -D "$d - $s" -v -q h -d mt -aX eizoCX240
mv eizoCX240.icc eizoCX240-orig.icc
colprof -A "Eizo" -M "CX240" -D "$d - $s" -v -q h -d mt -Zp -S
eizoCX240-orig.icc -aX eizoCX240
Best,
Alberto
--
Photo galleries : http://albertoferrante.name
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