Re: Creating ICCs with pigmented inks
Re: Creating ICCs with pigmented inks
- Subject: Re: Creating ICCs with pigmented inks
- From: Graeme Gill <email@hidden>
- Date: Thu, 11 Jul 2002 17:50:51 +1000
Alexey Gribunin wrote:
>
>>Yeah but there is only what - one of these apps available? Profile City's
>
>>app is the only one I can think of that will compute something other than
>
>>D50 LAB from spectral measurements.
>
>
Logo ColorLab also can do this. I thought about color matching for non D50
>
light but I don't know how to make further color conversion. E.g. Photoshop,
>
as I know, uses D50 as internal PCS. So even if we have measurements whith
>
white point other than
>
D50, we can do nothing with it. Or am I missing something?
The ICC format doesn't allow for recording the particular illuminant
spectrum, nor does it represent the profile information in a way
that allows the illuminant to be changed after creating the profile.
The illuminant spectrum therefore becomes "part of the profile"
(implicit in that profile being right for a particular set of
viewing conditions), just as the mode of a printer, the paper type,
the DPI etc. make a profile appropriate for a particular set of
conditions. The profile will be a closer match to what we actually
see under those viewing conditions.
[The Argyll CMS has supported arbitrary illuminant spectra for some time.]
Graeme Gill.
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