RE: NEC PA271Q "Native" chromaticities
RE: NEC PA271Q "Native" chromaticities
- Subject: RE: NEC PA271Q "Native" chromaticities
- From: Wayne Bretl via colorsync-users <email@hidden>
- Date: Fri, 3 Jan 2020 14:30:56 -0700
OK - thanks.
I guess it must have been necessary to invent the term for some reason,
probably related to use in LUT adjustment vs. color profiles (?).
But I really think saying "measured chromaticities" would be adequate (and
not lead to a frantic search for a definition of the term "illuminant
relative," which seems on its surface to imply some adjustment, when it
really means the opposite).
It would make sense to me to use the term and supplement it with "(not
adjusted for white point adaptation)" if it were being explained in a
textbook.
Wayne
-----Original Message-----
From: colorsync-users
<colorsync-users-bounces+waynebretl=email@hidden> On Behalf Of
Florian Höch via colorsync-users
Sent: Friday, January 03, 2020 2:18 PM
To: email@hidden
Subject: Re: NEC PA271Q "Native" chromaticities
Hi,
Am 03.01.2020 um 21:48 schrieb Wayne Bretl via colorsync-users:
> From what I read here:
> https://sourceforge.net/p/dispcalgui/discussion/932494/thread/67db9b70
> / "illuminant relative" refers to direct measurements of the display
> chromaticities without an adaptation adjustment, although that name then
doesn't make sense to me.
Note that "illuminant" here means the actual illuminant (not necessarily
D50), not the PCS illuminant (which in ICCv2 and v4 is always D50). It's
just another way of saying the color has not been adapted to D50.
Florian.
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