LG CX OLED Workflow

[Christian Sohlberg]

Hey guys,

I have a LG CX 55 Oled that I want to get the most out of.

Meter: X-rite i1 Display Pro
Source output: GPU @ RGB Full 12bit, Madvr @ (16-235)
White Point: 6500K, 100 cd/m2 @ 100 IRE (Set through HCFR)

DisplayCal settings:

“White level drift compensation”
“Full field pattern insertion” @ 45sec, 5sec, 25%
“Video 3d lut for madvr (d65, rec.709/rec.1886)

Whitepoint: As measured
White level: As measured
Black level: As measured
Tone Curve: As measured

Testchart: Auto-optimized
Amount of patches: 425

3d lut settings: Default
Rendering intent: Absolute colorimetric with white point scaling

Question:

Should I calibrate the panel further before even starting DisplayCal, by
using for instance HFCR to get the grayscale correct with 22 points?
Or, can I use DisplayCal to do everything for me?

PS. Pointers on the actual DisplayCal settings would also be appreciated.

• This topic was modified 3 years, 4 months ago by Christian Sohlberg.

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[A.ces]

Honestly I think it would be better to do grayscale,  and gamma using the TV’s 2 point, and 22 point settings instead, also the stock warm2 white point is very accurate, I wouldn’t  change the white point without atleast having a standard  calibrated w-led SRGB gamut display to use as a reference when adjusting the whitepoint.

You can get further improvements  by uploading SDR 3DLUT but then I believe you would need commercial software like calman, or ideally lightspace

[Christian Sohlberg]

Update:

I did the pre displaycal calibration using 22 point gray scale and got
really good results. Delta error of 0.2 across the board.

Fired up displaycal and ran the madvr profile @ 425 patches.
When the 3dlut is generated it says that it has 99.3% coverage. (good?)

When I measure the results in HCFR with the 3dlut enabled there is no
real difference…?

Primary and secondary colors are the same, rgb grayscale and gamma is
actually a little bit worse.

What am I doing wrong?

• This reply was modified 3 years, 4 months ago by Christian Sohlberg.
• This reply was modified 3 years, 4 months ago by Christian Sohlberg.

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