LG 32UD99 high gamma deviation

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  • #12883

    Ladis Pejchar
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    Hello, I am trying to calibrate new screen LG 32UD99. The screen has option of hardware calibration through software called True Color Pro. When calibration with this software was done, the gamma deviation was quite high -> 14%. I attached my results. Are these results usable for editing photos for web usage? Or would it be better to use displaycal eventhough I wouldn´t be able to do hardware calibration ? Or is screen just bad..? Calibration device: Spyder 5 pro

    thanks a lot

    P.S. monitor was set to default, calibration target set to standart i.e -> D65, Gamma 2.2, ICC version 4, LUT table, ISO 12646,

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    #12920

    Vincent
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    Hello, I am trying to calibrate new screen LG 32UD99. The screen has option of hardware calibration through software called True Color Pro (TCP).

    TCP is very limied even if used with i1DisplayPro. AFAIK there are no spectral correction in LG software for that kind of LED-P3 backlight .

    When calibration with this software was done, the gamma deviation was quite high -> 14%. I attached my results.

    Verify them with DisplayCAL (need spectral correction and Spyders are not very accurate devices). This way you can get actual gamma curve “shape” in 2D plot (Y axis = gamma value)

    Are these results usable for editing photos for web usage?

    IDNK, verify that profile with DisplayCAL. Same goes with other OEM HW calibration packages from other vendors (as long as measurement device is supported by DisplayCAL)

    Or would it be better to use displaycal eventhough I wouldn´t be able to do hardware calibration ? Or is screen just bad..? Calibration device: Spyder 5 pro

    Answered above. I’m almost sure that LG software is the one to blame. Please check that your display has not enabled some kind of auto-dimming feature (disable it).

    P.S. monitor was set to default, calibration target set to standart i.e -> D65, Gamma 2.2, ICC version 4, LUT table, ISO 12646,

    ICC v2 offer best compatibility

    • This reply was modified 5 years, 8 months ago by Vincent.

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    #12926

    Vincent
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    Are these results usable for editing photos for web usage?

    BTW, if display profile is an accurate description of your display, color managed apps will compensate that gamma difference between display profile and image profile so it may not matter as long as other conditions are met… but in most apps that will lead to some kind of rounding error seen as “bands” in gradients.
    That rounding errors could happen even if you have a perfect 2.2 gamma and try to open an sRGB image (sRGB “gamma” is not exactly 2.2).

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