Calibrating Sony PVM-A250

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  • #22107

    WilliamCutting
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    Hello there, Happy new year!

    I’m trying to Calibrate Sony OLED display with retail i1Display pro and DisplayCal, I just got the display and i’m playing around with it but, i don’t think i’m getting decent results, I’d appreciate to have a little assistance, i find a little hard to compare my results with target gamut and points, the best results i got was Δ Average 0.17  Maximum 2.96 RMS 0.38,  I’m also attaching all the compressed results created with DisplayCal

    Display is set to Native Gamut, Gamma 2.4, connected with SDI via BDM DeckLink 4k,  Trying to profile for Rec709

    In DisplayCal I’m using Resolve, Display to RGB OLED Family (Sony PVM 2541),  display delay to 1000ms, output level full range, I turn on White level Drift compensation, and turned down Black level drift compensation, Observer CIE 1931 with White point coordinates : x .307, y .318 as Sony suggests, White level 100 nits,  black level  0.0001 nits, Tone curve Rec709,  Profiling type XYZ lut + Matrix,  In the 3D lut settings: source colorspace Rec709ITU-RBT.709, TONE CURVE : Gamma 2.4 Absolute, I’m using black screen for test charts

    Thank you so much for this software for being free and compatible with MAC, This is Huge Florian !

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    #22125

    Florian Höch
    Administrator
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    Hi,

    do not use Rec. 709 tone curve and do not set a white or black level target. Set those to “As measured” on the calibration tab.

    #22136

    WilliamCutting
    Participant
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    Thank you so much for the reply Florian,

    I’ve tried calibrating Sony with those set to “As Measured” I got slight decrease in Max error but Average Delta now is 0.20 (it was 0.17 with previous settings)

    I’m attaching compressed results, I still do not can completely get around comparing results with reports but, when i check self measurement report, i always see that white point is not ok. others readings seem to be ok against target points. I think something is not correct in the setup, Should i have White level Drift compensation on?  should Testchart be on auto-optimized? In the Display & instruments tab, Output levels should be on Auto,  full or TV RGB?

    Thank you sooooo much for the app and the support

    BTW how can i view in DisplayCal what i achieved and Target points?

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    #22166

    Florian Höch
    Administrator
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    when i check self measurement report, i always see that white point is not ok.

    This just means it is not close to the daylight locus, which is understandable since you used a custom whitepoint (so in this case, it is fine).

    Should i have White level Drift compensation on?

    On an OLED it is generally recommended.

    should Testchart be on auto-optimized?

    Yes (after creating a profile, it will be set to the specific chart that was created).

    In the Display & instruments tab, Output levels should be on Auto, full or TV RGB?

    For Resolve, always auto or full since output levels are controlled by Resolve.

    BTW how can i view in DisplayCal what i achieved and Target points?

    Create a measurement- or self-check report with a RGB testchart of your choice on the “Verification” tab.

    #22167

    WilliamCutting
    Participant
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    Hi Florian,

    Thanks very much for the info,

    Did you have a chance to check out my results? What do you think?

    #22170

    Florian Höch
    Administrator
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    Looks good.

    #22171

    WilliamCutting
    Participant
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    Thank you,

    One more thing that i’m not sure about, Sony’s input SDI RGB range is set to limited by default. I reckon since Monitor is set for  Rec709 Resolve would sent limited signal anyhow, but is it right?

    #22173

    Florian Höch
    Administrator
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    Your current configuration is correct.

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