Originally Posted by mo949
Do you know if the CMS HSL have different levels of impact on the gamut when used if you change between these modes?
Hi, I have tested a lot of stuff beyond measurements, checking patterns but mainly real content etc....
Adjustments to these CMS controls are always degrading real performance, but to know which exactly areas, you have to measure a lot of color points, since problems introduced can be detected by naked eye and changes are visible with real content; it's a waste of time to locate what areas are degrading by taking cube measurements and analyzing since the same job you can do it by checking various different scenes/movies....to specific scenes is more visible to others less visible.
A good approach to do this, is the following method I performed....For example, to compare and locate if the calibration adjustments are not introducing problems, lets say that you have used ISF Dark mode to calibrate.....copy the same settings of the main page (OLED/Contrast/Brightness/Color/Sharpness) and Color Gamut Normal and all other enhancements disabled to ISF Bright.
So the only difference between ISF Dark vs. Bright modes, it will be only the adjustments of White Balance the ISF Dark has.
Pause a movie or check during playback..... check various colors/shades and swap between these 2 memories to check the differencies.
Swapping between Dark-Bright is instantly if you have opened the list of the modes, you press Up+OK or Down+Ok button very quick while you focus to paused pattern or movie still.
The ideal to these sets if to bypass any internal controls and use only 3D LUT, the less internal adjustments, the more natural looking image (less digital-look).
This is exactly what they do when they buy these LG's for post-production applications....they use Color Gamut Wide in SDR (which gives close to DCI-P3) and calibrate using external 3D LUT Box or internal granding suite 3D LUT capability (for Davinci Resolve for example or others.)
I have experience only from EU 65E6, I can't comment for other models/regions.
After HDR10/2D Internal Controls/3D Internal Controls/3D LUT calibrations, the real magic comes only from 3D LUT for my eyes which is familiar with 3D LUT calibrated sets a lot of years from various displays.