Originally Posted by Chris Corcoran
Fair warning! HDR with a pj is a rabbit hole, both delightful and frustrating.
We thankfully have the option of adjusting the hdr slider as there is still no universal standard for what studios master hdr peak brightness/nits to. (Which gave rise to tone mapping displays and mastering titles with dynamic metadata such as Dolby Vision and HDR10+.)
Our projectors don't have the capability to perform well with high nit content like a TV would, so we have a hdr slider to help compensate for the different contents nit level. Some movies can be on the high side being mastered at 4000 nits, others could be as low as 400 nits. The HDR spec officially allows up to a searing peak of 10,000 nits! Rec709 is mastered to a peak of 100 nits.
Because of the different mastering levels, many projector users implement some form of tone mapping to help balance high nit level content. There are hardware and windows software options to help us get the max performance and image quality out of our content and projectors. Luckily there are lots of forums discussions on these topics.
I too tried calibrating with hcfr and calman with the same meter, and I too walked away with a mess... Most people seem to use a SDR calibration as a base and adjust for p3 or 2020. For discs I've had the best luck with ripping and using MadVR tone mapping on my pc, and for streaming adding a Vertex has happily opened some locked doors as I usually prefer LLDV tone mapping from apps.
Like I said, it's a rabbit hole and depends how critical you want to be with your content.
Sent from my SM-N975U using Tapatalk