ASUS PG329Q has raised black levels after calibration

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  • #30970

    provanguard
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    Hello,

    I am attempting to perform calibration using DisplayCAL (lastest official release) for my new ASUS PG329Q wide gamut monitor. This results always in raised black levels – blacks become grey.

    I have tried the sRGB setting in DisplayCAL and tried both of these corrections:

    • LCD PFS Phosphor WLED Family
    • LCD White LED family

    Using advanced settings I have switched output level from Auto to Full Range RGB after seeing the raised black levels but it did not help. Black point compensation has been always unchecked.

    I don’t know what else I can do to fix the issue.

    The raised black levels are clearly visible when compared to the ASUS ICM profile that came with the drivers and the profile created by i1Profiler, so I assume that the issue is with the DisplayCAL calibration.

    My software and hardware:

    • ASUS PG329Q (IPS, wide gamut, 160% SRGB, 98% DCI-P3) in User Mode, brightness target 120. I am guessing it is LCD PFS Phosphor WLED.
    • Nvidia RTX 3080, lastest studio drivers, tried both default color settings and Nvidia color settings with full RGB output. 165 Hz with 8 bpc output.
    • Windows 10, 20H2
    • i1Display Pro (non Plus)

    Please kindly provide me with some pointers on what settings should be used in DisplayCAL in order to fix the issue.

    i1Display Pro on Amazon  
    Disclosure: As an Amazon Associate I earn from qualifying purchases.

    #30972

    provanguard
    Participant
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    I did more calibration attempts and found the following:

    • the ASUS ICM profile and the i1Profiler “Standard” profile have deeper blacks (and look quite similar)
    • the DisplayCAL sRGB and i1Profiler sRGB setting have elevated blacks (and look quite similar)

    It seems like in general I am not familiar enough with the topic to be able to tell what calibration results are correct and how to properly perform the calibration. I am still learning.

    Please kindly suggest how to proceed in this case. I would like to maximize the color accuracy of my new monitor.

    The applications I use:

    • Davinci Resolve Studio
    • Capture One 21
    • DxO Photo Lab 4
    • Adobe Lightroom 6
    • Nikon NX Studio
    • Affinity Photo

    Can I use the wide color gamut in any way and is there anything special I should do during calibration to achieve it?

    Should I create separate profiles for sRGB and WCG? Should I create separate profiles for 8 bpc and 10 bpc color output (configurable in nvidia driver settings)?

    • This reply was modified 2 weeks, 1 day ago by provanguard.
    #30982

    Vincent
    Participant
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    DisplayCAL is unlikely to raise BLACK COLOR (0,0,0) levels, likely to raise dark greys (NOT BLACK) to match *your* sRGB TRC calibration *choice* because by defintion sRGB TRC is ligther on dark grays than 2.2 and usually when callibrating app will try to match chosen TRC on a relative way to avoid clipping on finite contrast display.
    Instead of appaise it visually, measure BLACK (0,0,0).

    Use g2.2 as calibration target for your sRGB/non color managed app (games) settings. Color managed apps don’t care about your calibration TRC choice so 2.2 is a goof choice too as it will be close to native gamma loosing a minimum number of unique grey levels when calibrating grey in GPU.

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