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LG White Balance Pre-Calibration using Service Menu

 
 
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Author ConnecTED
LTE
#31 | Posted: 19 Apr 2022 01:06 
Hi, for your colorimeter, see the recommended meter settings here:

https://www.avsforum.com/threads/colourspace-zro-low-cost-manual-calibration-software-thread.3175441/post-60895715

For the HDR calibration, use a different color temp in SM and the regular menu.

The target colorspace is ST.2084 REC.2020 for HDR10.

For LG manual calibration see here:

https://www.avsforum.com/threads/colourspace-zro-low-cost-manual-calibration-software-thread.3175441/page-18#post-60904235

Author raidflex
ZRO
Male
#32 | Posted: 20 Apr 2022 14:26 
ConnecTED:
For the HDR calibration, use a different color temp in SM and the regular menu.

The target colorspace is ST.2084 REC.2020 for HDR10.

For LG manual calibration see here:

Thank you for the assistance. Currently I am using Cool for SDR and Warm for HDR. I was able to pre-calibrate the SDR without issues.

But I am a little confused on the HDR WB calibration in the Service Menu. When performing the pre-calibration for the warm preset for HDR what would be the correct settings in ZRO? Would I be setting the color space to ST2084 Rec 2020 and Patch Scale to 8-bit Legal? Would I also be turning on the HDMI override to engage HDR10 as well at this point?

Author ConnecTED
LTE
#33 | Posted: 20 Apr 2022 22:34 
raidflex

Using 2-Point RGB Balance controls (general rule) you can fix RGB balance, not Y (luminance) / or gamma errors.

For the HDR RGB balance you will use the ST.2084 REC.2020 as the target colorspace, the RGB balance is slightly different compared to REC.709.

Select the same color temp in both WB SM and regular UI menus. (for example, warm 2 to your UI before starting HDR calibration)

For HDR, set patchscale LEGAL and 8-bit if you have Pi3, or 10-bit if you have Pi4 with Ted's PGenenerator ISO 1.3:

https://www.avsforum.com/threads/dedicated-raspberry-pi-pgenerator-thread-set-up-configuration-updates-special-features-general-usage-tips.3167475/post-61452981

https://www.avsforum.com/threads/dedicated-raspberry-pi-pgenerator-thread-set-up-configuration-updates-special-features-general-usage-tips.3167475/post-61485021

https://www.avsforum.com/threads/dedicated-raspberry-pi-pgenerator-thread-set-up-configuration-updates-special-features-general-usage-tips.3167475/post-61449897

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 LG White Balance Pre-Calibration using Service Menu

 

 
 
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