Apple doesn't offer HLG preset for new HDR screens. Not sure why?
Brightness is not a problem at all as it goes way outside 1000nits and proper preset properly clips it at 1000 nits.
You would need to measure and check how far it's from standards if you want to use it for some paid work. Some units are at eg. 6600K, so need adjustment for sure.
Blooming effect is there (specially off-axis preview, where it gets blue tint), but worse is pulsing on scene changes when they go from dark<-> bright. This starts to annoy me a lot during movies.
In the same time Netflix DV graded titles look great, accuracy is good enough for a home screen. It's a joy to watch well HDR graded movies now. We finally moved away from Rec.709 SDR. Still not impressed with some HDR grades- too dark by average. Even when I watch at quiet dark room it's still hard to see some details.
Here are measurements from some well known guy (also done with proper probe- Colorimetry Research CR-300):
https://forums.macrumors.com/threads/ap ... t-30551191HDR tracking is not that bad as for home screen (SDR even better).
It includes DEITP values which is new "Delta E"
Delta E values look excellent, but I would like to see side by side view against reference screen.
Portrait Displays has been investigating the differences between DEITP and the commonly used DE2000 metric to help users transition to using the new metric. “DEITP has been proven in recent visual research to be a more consistent predictor of color differences over the commonly used DE2000, especially for high dynamic range (HDR) and wide color gamut (WCG) display technologies. The two metrics have significant differences in how they model the human visual system, which results in notably different predictions of visual color differences,” said Catherine Meininger, Color Scientist at Portrait Displays.
“You can expect DEITP to produce higher numerical values than DE2000, and by consequence, predict larger perceptual differences than DE2000. While it is true that DEITP can overpredict color differences, it is also highly likely that DE2000 has been underpredicting color differences, especially for HDR and WCG scenarios,” continued Meininger.
Catherine Meininger and Tyler Pruitt of Portrait Displays will be presenting a detailed comparison of DEITP and DE2000 at the Society of Motion Picture and Television Engineers (SMPTE) 2019 Annual Technical Conference in Los Angeles, CA. The presentation will be recorded and distributed by SMPTE at a later date.