Originally Posted by Cam1977
Great info bro, thanks a bunch!
No problem! I did initially watch movies with the player you have (borrowed it from my dad) while the ub820 arrived and it looked great too, it's just the Panasonic has a couple of extra tricks up it's sleeve, and you can turn off Dolby Vision as well which might be helpful if something breaks with DV in the future. Feel free to ask away on the player if any of you have any questions on it, the UB820 thread is mostly filled with projector guys from what I've seen.
Originally Posted by TallCoolOne
APL behavior aside, I’m curious how tone mapping in the player would even work. My understanding of tone mapping is that the movie metadata contains the peak luminance and the TV, knowing its limitations, will map the data to fit within its range respectively. How would the player know how to tone map unless it was given the TV’s max luminance based on the color volume in a scene? And even if it did have a basic luminance number, I would think the TV could better calculate the tone map based on the rest of the color volume data in the scene and what works best for the tv in that situation.
Is my understanding of tone mapping wrong?
The player has different tone mapping presets depending on your display:
Basic Luminance LCD and Projector (500 nits)
Middle or High Luminance LCD (1000 nits)
Super High Luminance LCD (1500 nits)
OLED (1000 nits)
As to why there are 2 settings for 1000 nits, maybe they are doing something slightly different for OLEDs, but I suspect it was done this way to make it easier for users. Also not all tvs do well what you described, prior to 2018 models LG Oleds would based their tone mapping on the mastering level of the content, instead of what it was actually outputting. So a movie mastered at 4000 nits that only went up to 600 nits at it's highest point, would still be tone mapped off the 4000 nit number, leading to an unnecessarily dim picture (I believe this is part of what you see on Vincent's 2017 Oled tone mapping comparison video). Also, some movies only say their mastering level only. Someone with more technical expertise in these areas can probably explain/correct anything I stated, but this is my understanding of how it works.
Originally Posted by BerserkDoomguy
Do you shut off dynamic tone mapping when doing calibration in games?
No as I don't quite trust most games HDR calibration options, they seem overly simplistic. Now Halo... That one is fantastic and makes most other games options look poor and half baked. And on Halo I found that leaving it on and maxing out the peak HDR output produced about the same level of highlight detail as calibrating to it off, with the added bonus of a higher APL.
Originally Posted by Cam1977
^it could be that's it's a bit cooler...but the pq seems a bit more natural. I need to watch more content to really see if I'll keep it at that, but so far my go to movies look good at warm 1.
I've been using it for over a week and prefer it too. It kind of exposes how warm 2 pushes yellow/orange too much. Now maybe warm 1 has little too much teal, but not to the same degree as the yellow push on warm 2. Now I just need them to fix technicolor in PC mode so it stops locking to a wide color gamut in SDR, as Pennywise stated; and to include the option to switch chroma sampling mode on PC, so I can switch it to 4:2:2 instead of locking to 4:4:4. This way I can use Technicolor Warm 1 for gaming without color banding and not have to rely on HDR game mode.