sur AVS, Manni01 a écrit:
Originally Posted by R Harkness a écrit:
It will certainly be a shame if, for projection, only those owning a rare, discontinued screen will really see the benefits.
Now you understand why I was trying to get people to wait until UHD Bluray and HDR landed before making hasty decisions about replacing their screen with all that extra brightness in rec709 provided by the new models. All these gains are offset when we're talking WCG HDR, hence why the HP screen helps with HDR.
We should still get some of the other benefits without an HP screen, especially on screen sizes more reasonable than Zombie's extravaganza (not talking about my puny one of course).
Originally Posted by rak306 a écrit:
Seems to me that is all controllable with the aperture/bulb settings. Before HDR, didn't we all strive for the same brightness (14 FL/48 Nits)? And if it varies so much, how do we get recommended settings from JVC?
What about my other comment regarding color space?
HDR10 doesn't define any standard for consumer content playback. This is not JVC's fault. Every manufacturer is doing their own thing. It's been discussed at length in the HDR Calibration thread HDR Calibration & Discussion
The reason why the settings vary is because they depend both on the set up of the user and on the content (to which peak brightness it was mastered, usually around 1000nits but it can be more, up to 4000nits at the moment).
Even experts don't agree on which gamut should be used for calibration. Spectracal recommend calbrating to rec2020 saturations, because that's the container and it doesn't matter which gamut was used during mastering as long as the metadata provides the correct gamut definition (usually P3, which is the minimum for grading as per the UHD Alliance specs, but it could be wider). Others claim that calibrating to P3 makes more sense, as that's the gamut most used currently for grading content and that's what most consumer displays can reach at the moment. It makes sense in a way, but I personally prefer the rec2020 saturation approach as recommended by Spectracal, as it works now and for the future, while the P3 approach only works now, provided no titles are mastered above P3 and that the display isn't able to reach above P3.
In any case, there is no way to calibrate to HDR10 yet for consumer displays. You have to be patient until all these guys agree, and we can see what's on the discs. The UHD Alliance has only defined (vaguely) specs for LED and OLED displays. They have not yet said anything about projectors.
Dolby Vision is not necessary a solution, because of the variations with projectors that Mike mentioned. But at the moment, it's only possible to calibrate to Dolby Vision, which has a properly defined end to end standard for consumer content. For HDR10 displays, you can only hope that it's been done properly by the manufacturer.
Be patient. You bought this generation before UHD Bluray was even released, before any HDR standard was fully defined. It comes with some risks. Hopefully it will turn out positively, but it's not even sure that the next gen will fully support the new standard because it's still in progress. So let's not blame JVC for providing the best they could at the time they released the new models. It's not their fault if the industry launches a new format with competiting HDR solutions and no properly defined standard. They can't implement it if it's not defined...