Re: MS Color Control Applet
Re: MS Color Control Applet
- Subject: Re: MS Color Control Applet
- From: Graeme Gill <email@hidden>
- Date: Sat, 01 Jul 2006 16:53:05 +1000
Steve Upton wrote:
That's the right question. The software will follow the ICC spec and adapt the white point to D50
before writing it into the profile. Any white point adapted to D50 becomes D50 (in monitor
profiles) so the media white point tag in v4 profiles will always be D50 even if the monitor is
calibrated to a different white point... and this is correct. It seems odd but it's OK.
It's more complicated that that. All (useful) V2 profiles adapt the monitor white point
to be D50 already. What's changed in V4 is that now even absolute colorimetic intent
in display profiles have to adapt the display white point to D50, because the ICC
have (wrongly IMHO) declared that an emissive devices white is to be regarded
as the illuminant, rather than the devices media white point.
What this means in practice is a reduction in ICC functionality. Using V4 profiles
and the ICC intents, it is no longer possible to do absolute colorimetic
matching on monitors. You're stuck with relative colorimetric.
Graeme Gill.
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