[argyllcms] Re: Neutralize Grey Axis
- From: Nikolay Pokhilchenko <nikolay_po@xxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Tue, 11 Jan 2011 00:04:07 +0300
I've just sent new profile to end user. I hope he'll test it.
The parameters was:
colprof -iD50_1.0.sp -o1931_2 -f -qh -ds:n -dw:.345669:.358496 -da:100 -db:18
-dl:170 -df:1.5 -df:.345669:.358496 -S"sRGB.icm"
The result is closer to the user demand, than the -dpp was.
Mon, 10 Jan 2011 19:43:09 +0100 письмо от Klaus Karcher
<lists@xxxxxxxxxxxxxxxxx>:
> "Gerhard F?rnkranz" wrote:
> > As the maths for relative colorimetric intent are well defined by
> > the ICC specs, it makes sense that this "artisitic freedom" applies
> > only to perceptual intent.
>
> Of course. And exactly this led me to the suspicion that it might be
> rather a FWA compensation issue (assuming Nikolay's client compared PM
> and Argyll relative results and found only the Argyll version too
> bluish). But maybe he compared Argyll relative with PM "percolute".
>
> Nikolay Pokhilchenko wrote:
> > I have two troubles with users of "blue" cheap photopapers. The
> > profiles from Profile Maker works much better for them. The relative
> > intent in ArgyllCMS profile was unacceptable on bluish papers.
>
> ... so the question whether the problem originates from wrong FWA
> assumptions or wrong adaptation assumptions is unanswered.
>
> Furthermore it would be good to know if both profiles have been made
> from the same measurement file (in order to rule out measurement errors).
>
> Klaus
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