Originally Posted by TitusTroy
I'm late to the party on this but I recently watched Vincent Teoh's video on the HDR Optimizer setting on the Panasonic UHD players...I always thought that the higher end TV's did a much better job at tone mapping then any UHD player...Vincent says to disable tone mapping on the display
No no! This is quite a common mistake so I'll explain - he says that if you have dynamic
tone mapping, then you should disable dynamic
tone mapping on your TV so that there aren't two devices both analysing the picture and doing dynamic
He doesn't say disable all forms of "tone mapping"! You can't disable tone mapping completely. you have to have some form of tone mapping and the TV will always tone-map
(a) colours that it can't display, down to without its own colour gamut
(b) luminances that it can't display, down to within its brightness range.
and enable it via the HDR Optimizer...I have an LG C7 OLED but I don't see any Dynamic Tone Mapping setting...how would I disable tone mapping on my LG C7?
See above - you are mixing up two completely different things, dynamic
tone mapping which is the one you only want happening in one place, and plain tone mapping which isn't possible to disable. Exactly the same as like it's not possible to disable the TV's scaler and watch SD content at 1/16th of the size of the screen, HD content 1/4 the size of the screen etc.
The TV always scales up to 4K to fill the screen and you cannot turn off the scaler.
The TV always tone-maps out-of-range content to within its capabilities, and you cannot turn off the tone-mapping.
Dynamic tone-mapping just manipulates the tone-curve based on analysing the picture contents instead of obeying the metadata. Vincent says you should go back to the normal TV behaviour of obeying the metadata, but obviously, the TV will still be doing tone-mapping that way
Now the answer to the question you meant to ask
The 2017 LG OLED TVs now support HDR with 'Active HDR', which is similar to HDR10+ or HDR10 with dynamic metadata. This feature analyses the content frame by frame in real time to adjust the HDR tone mapping curve. This has the advantage of displaying each scene with an optimized HDR effect, as opposed to the HDR with a static metadata, where all the movie was using the same tone mapping curve, resulting in some scene sometimes being too dark or too bright or simply not exposed correctly to have the best possible HDR effect.
To activate this feature on the C7, you need to go in the 'Expert control' tab. In the 'Expert Control' tab, you will need to set the 'Dynamic Contrast' to 'Low'. The 'Low' setting turn on the 'Active HDR without the 'Contrast Enhancement'.
So - turn off 'Dynamic Contrast' to turn off dynamic tone mapping