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=cox.net@lists.apple.com> On Behalf Of Florian Höch via colorsync-users Sent: Friday, January 03, 2020 2:18 PM To: colorsync-users@lists.apple.com 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. _______________________________________________ Do not post admin requests to the list. They will be ignored. colorsync-users mailing list (colorsync-users@lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/colorsync-users/waynebretl%40cox.net This email sent to waynebretl@cox.net