Gee! I'm "before my time" -- it's like Orson Well's promise : "We will sell no wine before its time". I wonder what all this "iccMax" is about? Best / Roger You're right, it was 2151 when they first discovered, what was it, "plasma something"? I remember Captain Kirk had to travel back in time to make sure this guy was going to take that first, historic, flight at that date... -----Original Message----- From: John Castronovo <jc@technicalphoto.com> Sent: Wednesday, February 5, 2020 3:31 PM To: graxx@videotron.ca; ''colorsync-users?lists.apple.com' List' <colorsync-users@lists.apple.com> Subject: Re: Two monitors, side by side Oldest Star Trek date mentioned in the series is 2151 -----Original Message----- From: Roger Breton via colorsync-users Sent: Wednesday, February 05, 2020 2:16 PM To: ''colorsync-users?lists.apple.com' List' Subject: RE: Two monitors, side by side Wayne, I agree moving to "laser" (narrow wavelength LED diodes a.k.a. SAMSUNG Quantum Dots?) is going to exacerbate individual observer differences. I remember reading this discussion on the list a while ago. Question: so, colorimeter see the monitors as "identical" because their respective spectra produce the same "signal" to the brain, in terms of "sensation". I don't suppose spectral measurements of their respective white points could not be used in some sort of advanced spectral matching computation? Hey! We're in 2020 😊 ... Isn't that the year of Star Trek? / Roger -----Original Message----- From: Wayne Bretl <waynebretl@cox.net> Sent: Wednesday, February 5, 2020 2:10 PM To: graxx@videotron.ca; ''colorsync-users?lists.apple.com' List' <colorsync-users@lists.apple.com> Subject: RE: Two monitors, side by side Well maybe... Part of the problem is the small population that has been used for determining the standard observer - the evidence of variability is plain, but it's more difficult to determine the reliability of the average. Plus I believe later research has shown some flaws in the standard observer (but, I believe, smaller than the variation). I haven't take a deep dive into the topic of new data, since the 1931 basis continues to be used and the personal variations (observer metamerism) are relatively large. By the way, individual variations are becoming more of a concern to the movie industry as they move to laser projectors. -----Original Message----- From: colorsync-users <colorsync-users-bounces+waynebretl=cox.net@lists.apple.com> On Behalf Of Roger Breton via colorsync-users Sent: Wednesday, February 05, 2020 11:59 AM To: ''colorsync-users?lists.apple.com' List' <colorsync-users@lists.apple.com> Subject: RE: Two monitors, side by side Wayne, Part of you reply would attribute the visual difference to my deviating from the Standard Observer? This would imply that, given a relatively large number of people seeing the difference in the two display white points, "on average", the consensus is that "they would match"? I confess I have no idea to what extent my color vision deviates from the 1931/2 color matching functions ☹ / Roger -----Original Message----- From: Wayne Bretl <waynebretl@cox.net> Sent: Wednesday, February 5, 2020 1:55 PM To: graxx@videotron.ca; ''colorsync-users?lists.apple.com' List' <colorsync-users@lists.apple.com> Subject: RE: Two monitors, side by side Charles J. Hirsch of RCA, in November 1964, published a paper in the IEEE Transactions on Broadcast and Television Receivers, "A study of the need for color controls on color TV receivers in a color TV system operating perfectly." In this paper he analyzed the effects of differences in spectral response among individual observers with normal color discrimination, as recorded by Gibson and Tyndall in 1923-24. Hirsch's conclusion was that with NTSC primaries (similar to Adobe RGB), adjustments of +/- 20% or more in the proportions of a mixture might be required to nullify the extremes of observer differences. In other words, do not expect that you are a match to the standard observer, and expect to see some difference between displays that have different spectra. I, too, have two disparate monitors, and they do not match exactly to my eye when the i1pro says they should. I use the larger, wider gamut one for judging images and the smaller one for menus. I also note that the mismatch when first turned on is much greater than after 30 minutes of warmup. I suspect this is due to change in the color of the fluorescent backlight as the internal pressure stabilizes. -----Original Message----- From: colorsync-users <colorsync-users-bounces+waynebretl=cox.net@lists.apple.com> On Behalf Of Roger Breton via colorsync-users Sent: Wednesday, February 05, 2020 10:21 AM To: colorsync-users@lists.apple.com Subject: Two monitors, side by side I managed to pull my old CG-21 of the moth balls, to serve as a second display - how could have I ever lived without this convenience? Crazy. Of course, first thing I did was to try to make it "look" like my NEC PA271W. They're both LCD monitors yet, at the same chromaticity and Luminance, they don't look the "same". One is "reddish" (CG-21) while the other (NEC) is "greenish". Any suggestions? / Roger _______________________________________________ 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 _______________________________________________ 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 _______________________________________________ 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/jc%40technicalphoto.... This email sent to jc@technicalphoto.com