Originally Posted by Jon65
Good catch. I messed up the screen capture. Fixed that.
Also added that I set the Color to 80. I started with 76 as recommended in the OLED calibration thread, then tried higher and lower to see where the error was lowest, then tweaked the CMS a little bit.
Hi, increasing so much the color slider, from 50 to 80, its a chart fix, its not a real fix of the problem.
The TVs are not suffering from any luminance or undersaturation issue in DV mode when they are using the default factory generic DV file LG is loading inside to panels, the problem appear when you will load a DV file CalMAN generates. If you perform manual cal of DV and not load any CalMAN DV file, you will have better results and it will not require to touch the color slider.
There no instruction to any CalMAN DV workflow, which will say to increase the color slider after the calibration from 50 to 75-80 range, so this workaround it a chart fix only users find out after spending many hours.
When you measure Color Checker in DV all color patch values have below 100 nits target luminance (because they have 50% Stimulus level all the targets), so adjusting so much the TV color slider, it can improve the charts when you measure below 100 nits, but increase the errors to higher luminance range since that large adjustment will clip the colors.
How LG with Dolby calculated that DV data file which not introduce any color gamut undersaturaton/ low luminance problem and any CalMAN DV data file is introducing these issues?
Does the purpose of calibration is to reduce dE so to have more accurate colors? But with that CalMAN DV procedure we have more color gamut errors, not only a few more, but a lot of more colors errors (+ 3-6dE range in gamut) more than without calibration at all, just the grayscale tracking is improved only.
Its clearly from all user posted data (I'm excluding any data from my end) that post color gamut performance is worse and since there nothing to do (no CalMAN workflow suggest to do anything after you will load the DV file), users find out that by adjusting manually controls after the AutoCAL DV calibration procedure and tone mapping calculation bla bla), other user are adding color, others are editing manually DV config files with other peak output numbers etc.
Does the initial notice for HDR calibration was to not touch contrast/brightness/color/OLED Light, because based to these settings the internal tone mapping work, right? (they work as bypass settings), so because results were not good now we are changing plans and recommend to use a color setting which looks better?
LG Engineers and CalMAN Devs must pay more attention and spend much time on testing before they release such features, in the calibration world we need solutions that work, if they don't work, they should not be released...or improved first internally and then being released.
A CalMAN DV PDF file has to been written (it has to be written from 2017, now in one month the 2019 models will be announced) also to describe the steps of DV calibration/setup using CalMAN Software Patch Generator + HD Fury Integral (which has been discontinued already....CalMAN has to add support for Vertex/Integral 2...the API for Vertex is a lot of months out to HD Fury site for developers to download).
At lease there a lot of valuable/helpful info to this thread about how to setup (from users).