Originally Posted by Kris Deering
So Spectracal should have a different workflow for every display?? That is what you're implying by saying they can adapt to what manufacturers are doing. I don't think that makes a lot of sense.
We haven't seen the HDR10 metadata as it isn't out there. I'm saying when that time comes, I'm skeptical (at best) that it will work as intended. We're already seeing how cavalier everyone is being with HDR10, I don't expect it to get much better.
As for the "looking correct with the Sony player", I am not looking at a JVC, I am looking at a Sony projector. I don't have a new JVC yet. I don't know what Sony is using for their PQ curve, but it definitely DOES NOT look at metadata. You are just forcing their HDR mode to ON. At some point I think we will see firmware updates to HDMI based components that will allow for HDR metadata (Marantz has implied this, which is what I'm using). Right now you are just getting content and forcing whatever PQ solution the display manufacturer decided on to it and hoping for the best. Again, welcome to the wild west!
I'm only quoting Joel. Yes I think they should add support for the most popular HDR10 displays, and he agreed with that. He even said that if JVC was willing to share the missing information, they would be happy - and therefore able - to support the JVCs. They did that for their Autocal, supporting the JVCs, the Panasonic and a few other popular displays, why wouldn't they do the same for HDR calibration?
Please read the thread I linked to if you want to read the whole exchange.
What do you mean by the HDR10 metadata not being there yet? It's present with each file containing HDR content, including the Exodus and Life of Pi demo trailers, otherwise they couldn't be reproduced properly.
My understanding is that you have to switch the display to HDR manually because the source doesn't support the HDMI 2.0a profile, which allows the automatic handshake between the source and the display to switch automatically between SDR and HDR.
If it means that the HDR metadata information is stripped and doesn't reach the display, then it's worse than the wild west and the only reason why you would get HDR to display vaguely correctly would be if the manufacturer is banking on the most likely for consumer content - 1000nits, not 10000nits - otherwise what you'll see will be, again, horribly wrong.
Given that using the Sony player both Sony and JVC were able to do HDR demos, and given that most people having seen both agree that the JVCs were much better at displaying HDR, again I challenge your 10000nits default. That cannot be right, especially if the HDR metadata doesn't reach the display.
They can only get something vaguely right (allowing minor adjustments with their gamma curve) if they default to the most likely target for peak white for consumer content, which has to be between 700-1000nits, as they have current HDR capable flat panels in mind. Anything else doesn't make any sense, so I would double and triple check this information from JVC.
If when you try the rs600 in HDR with the Sony player you get something decent, then clearly that's not what they are using as a practical (not theoretical) target, even if it's an assumption as they can't get the actual metadata.