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Why are my gamut coverages so low when trying to calibrate LG C1?

3601 Views 5 Replies 4 Participants Last post by  Evil_Husky
3
I got a 48" LG C1 this week to use as my PC monitor for gaming. Loving it so far but having trouble calibrating. Also just got an X1Display Pro to calibrate it with and using DisplayCAL to try and calibrate it which is my first time using such a device. The first step in the measurement part I get all the bars to match and the values to match the target exactly, but then when it's done calibrating I see the color gamuts are much lower than what I've seen in reviews for this monitor.

Rtings post calibration for example shows 98.8% sRGB, 75.1% Adobe RGB, and 91.0% DCI-P3 yet on mine after calibration I'm getting 80.5% sRGB, 57.1% Adobe RGB, and 59.3% DCI-P3! Below is a link to their review with the numbers I mentioned.

LG 48 C1 OLED Review

Here's the settings I'm starting with before I run the calibration:
Windows HDR: On

TV Picture Mode: Game Optimizer
OLED Pixel Brightness: 80
Contrast: 100
Screen Brightness: 50
HDR Tone Mapping: Off
Black Level: Full
Color Depth: 50
Tint: 0
White Balance: 2 Points, High (R0, G0, B0), Low (R0, G0, B0)
Color Temp: Warm 50
Sharpness: 0

If I didn't mention it then it's off, so all auto brightness/dimming things have been turned off.

Attached are the calibration results I got and my DisplayCAL settings. Any and all help would be appreciated!
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You may want to have a mod move this to the dedicated ArgyllCMS/DisplayCal thread.
Don't get too hung up on rtings' numbers. Their display, equipment used, and software used are all different from yours. Way too many variables for a direct comparison.
You might also be using an outdated spectral correction file. The LG OLED glass has gone through a couple of iterations since the 2016 models that file was built for.
These OLEDs are also usually kept at 150 nits or so during SDR calibration to keep the white sub-pixel from firing up and skewing the results.
Finally, here's a thread all about calibrating the 2021 LG OLEDs. Strongly suggest you read through it if you haven't already. Although most there are using different software from you, it can give you info on the "gotchas" associated with these TVs.
You may want to have a mod move this to the dedicated ArgyllCMS/DisplayCal thread.
Don't get too hung up on rtings' numbers. Their display, equipment used, and software used are all different from yours. Way too many variables for a direct comparison.
You might also be using an outdated spectral correction file. The LG OLED glass has gone through a couple of iterations since the 2016 models that file was built for.
These OLEDs are also usually kept at 150 nits or so during SDR calibration to keep the white sub-pixel from firing up and skewing the results.
Finally, here's a thread all about calibrating the 2021 LG OLEDs. Strongly suggest you read through it if you haven't already. Although most there are using different software from you, it can give you info on the "gotchas" associated with these TVs.
Also if you have windows HDR on but are using an SDR app windows is tone mapping everything to SRGB.
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Also if you have windows HDR on but are using an SDR app windows is tone mapping everything to SRGB.
So you are saying I should try calibrating with Windows 10 HDR off?
You may want to have a mod move this to the dedicated ArgyllCMS/DisplayCal thread.
Don't get too hung up on rtings' numbers. Their display, equipment used, and software used are all different from yours. Way too many variables for a direct comparison.
You might also be using an outdated spectral correction file. The LG OLED glass has gone through a couple of iterations since the 2016 models that file was built for.
These OLEDs are also usually kept at 150 nits or so during SDR calibration to keep the white sub-pixel from firing up and skewing the results.
Finally, here's a thread all about calibrating the 2021 LG OLEDs. Strongly suggest you read through it if you haven't already. Although most there are using different software from you, it can give you info on the "gotchas" associated with these TVs.
Hmmm I had not see that thread yet, looking at it now, it may be a bit above my head atm. This is my first calibration tool. My friend has the same tool and an older LG OLED, maybe 2-3 old and he gets much wider gamuts on his using the same software and tool.
Try measuring with HCFR using lg oled series 7 edr. I was getting undersaturated red on c9 too when measuring without edr, choosing lg 7 edr makes all primariers aligned almost perfectlcly to rec 709 targets
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