Originally Posted by avsform1
So with the 2016 OLEDs what can be calibrated in terms of HDR (BT 2020, HD10). Using Calman for SDR should REC709 be used or BT2020 be used? I've been out of the loop for awhile and still trying wrap my head around HDR calibration and I've had a C6 for about 6 month. I want find out how to best calibrate it so that that my Oppo 205 can send a the HDR signal and the CG can process the signal the best that it can. That suck that you can't calibrate the CMS, it's the main reason for having an HDR set. Its like the early days again when CMS didn't work on the 1st gen LCD, Plasma and PJs.
For UHD BD Movies you need to calibrate the RGB Balance (20-Point) in HDR10 mode. Use HDR10 Workflow of CalMAN. (REC.2020 with ST.2085 PQ)
In SDR we use Gamma curve as transfer function where you can set it to 2.2/2.4/BT1886 or whatever value you like....having in calculation the display Black/Peak White level to generate each digital level luminance levels, but in HDR the PQ Curve transfer function (ST.2084) which is an absolute curve it has specific luminance levels for each digital level (0-10000nits).
To trigger the TV to enter to it's HDR mode: 1) You can use Ryan's HDR patterns, 2) Use an HDR pattern generator like Murideo/Accupel 6000 or 3) If you have a known accurate pattern generator for SDR, you can add HD Fury Linker or Intergral which will add the metadata to the signal to trigger the TV to enter to HDR10 mode. (CMS not working)
Get ready to experience some issues with HDR RGB Balance due to un-alighment of adjusting controls points and also the artifacts will be introduced with wrong adjustment, looking only the dE charts is not enough, each adjusting point has specific +- adjusting range which will not introduce problems, always check with real content.
Contrast/Brightness/OLED Light settings in HDR are not working like we know in SDR, they should left untouched, because the display gamut/tone mapping is based to these default settings.
For Blu-Ray (SDR) REC.709 and gamma 2.4. If you have a 3D LUT Box and you have more options to calibrate another gamma options, make one for Gamma 2.2 for older movies, 2.35 for not so old ones additionally. (CMS can introduce problems)
For SDR a 3D LUT will help a lot because these panels are suffering a lot at mid-low end area, something classic measurements (at high luminance levels) are not revealing these issues, you can get an idea looking here: ***Official B/C/E/G6P OLED Calibration Thread