Monitor uniformity information is impossible to obtain from monitor manufacturers. I agree with some List participants, here, who argue that "You get what you pay for", in the sense that, the more "expensive" models happen to have "handpicked panels" -- you get what you paid for. Many monitors incorporate what's called "Digital Uniformity Equalizer" or "Digital Brightness Compensation". This is good -- when it works, though! To me, it's not enough to claim that brand X *has* a digital compensation option: there should be some claim as to how good this option is, with some supporting figures, so that, for example, "without compensation", brightness / color variation across the screen could be 13% and, "with compensation", it drops down to 7%, you see?, or some similar kind of claim. And it should state, in my opinion, for how long can this be expected to hold. At the price that "high-end" monitors sell for, these days, is it too much to know this information in advance? I'm all for "100% AdobeRGB" or 98% DCI-P3" and "16-bit LUT" kinds of features but we are entitled to also know what kind of "quality" we are getting for the money, in terms of "uniformity" -- there's life beyond "gamuts" and "gammas" and "HDR". Take the latest IDEAlliance SoftProofing Certification Protocol. A monitor manufacturer has to meet ISO-14861:2015 uniformity tolerance, and that's max 10% Luminance, across the surface of the screen, if I'm not mistaking, and under 4 Delta units (C* or E*, can't remember?). This is not a rant against any particular monitor manufacturers but I figure, if I'm going to pay close to $3,000 for a top-of-the-line unit, I would *love* to find out how "uniform" the panel is, and for how long can I expect it to stay that way, before I place the order and later argue with tech support that the panel is performing poorly? (And having to return the display for refund because of disappointing performance...) / Roger -----Original Message----- From: colorsync-users <colorsync-users-bounces+graxx=videotron.ca@lists.apple.com> On Behalf Of Roger Breton via colorsync-users Sent: Sunday, February 9, 2020 12:08 PM To: ''colorsync-users?lists.apple.com' List' <colorsync-users@lists.apple.com> Subject: Monitor Uniformity study After much work and trepidation, I am at the point where I can release the findings enclosed in this PDF: https://1drv.ms/b/s!AkD78CVR1NBqkt8B_bNYu4eo-D74bQ?e=K6gqTQ My goal was to come up with some kind of useful visualization for a monitor Luminance and chromaticity variation, across its surface. I experimented with different approaches and I'd be interested in any feedback. I wish I had initially measured the three monitors enclosed in this study so that I would have some kind of point of comparison - my bad. All I can say is that I enjoyed these monitors for many years and even though they're "off a little", now, they still serve useful purposes. These days, I'm in the market for a new LED 32 incher (the new Apple Pro is outside of my range.). I've emailed a few monitor manufacturers with regards to the kind of warranty they can give in terms of "uniformity" (but not Apple? John, if you have information you can share, here.). So far, no answer. For a Display to have no more than 10% deviation in Luminance or less than 5 dE2000, from the center of the screen, as ISO 14861:2015 and ISO-13646 call for, given the "natural" drifting to be expected with aging of ANY monitors, means pretty stringent requirements, initially. / Roger Breton (from a cold -22C, here, in Montreal.) _______________________________________________ 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/graxx%40videotron.ca This email sent to graxx@videotron.ca