Appearently displaycal uses “old” meter profiling method

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  • This topic has 10 replies, 4 voices, and was last updated 1 month ago by EP98.
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  • #36627

    Mark Walter
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    In the lift gamma gain forums i asked about why displaycal isn’t recommended for calibration and profiling. Appearently displaycal uses the ‘old’ meter profiling method, so you will end up with some out-of-CIE errors (negative values).

    my first question would be, is that true and why is there no update? Is it due to patent/legal claims from Calman etc.?

    my second question: I am planning to get a Lg oled 950 where displaycal appearently produces even more errors, so i am wondering if it makes any sense to get the display in the first place if I cannot calibrate it properly.

    • This topic was modified 1 month, 1 week ago by Mark Walter.
    #36629

    EP98
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    This is due to the White sub pixel. You’ll need to take that into account when profiling your colorimeter. DisplayCal doesn’t support a newer better method.

    Colourspace uses a FCVM method of profiling which improves accuracy on WRGB OLED. It doesn’t use the older FCMM method anymore.

    Calman uses the bodner method to improve WRGB OLED accuracy.

    #36631

    Mark Walter
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    Thanks for your answer. But as far as I know the OLED 32EP950 is a RGB-OLED with no W-LED… So this problem wouldn’t occur and Displaycal is still good enough to capture the calibration and profiling data, right?

    #36632

    Mark Walter
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    Colourspace uses a FCVM method of profiling which improves accuracy on WRGB OLED. It doesn’t use the older FCMM method anymore.Calman uses the bodner method to improve WRGB OLED accuracy.

    Is that something that will or could be updated ArgyllCMS in the future, or is it not possible because of any patent infringement?

    #36637

    WhatHueMean
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    What is the minimum version of Calman that we can use to calibrate computer monitors then? Is the x-rite software comparable at all in comparison?

    #36638

    EP98
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    You should be fine with RGB OLED with DisplayCal. I still use it alot.

    It’s WRGB OLED that causes issues, although the volumetric method of profiling Colourspace uses is more accurate across the board for all displays not just WRGB OLED compared to the older 4 matrix method.

    You’ll be fine calibrating computer monitors with DisplayCal. X-Rite software sucks, don’t use it. But pro software will be better due to continued support and newer methods.

    But Calman is very expensive. You are talking thousands of dollars. Colourspace is cheaper but also expensive, hundreds of dollars. Prices don’t make sense for the average person. You’re better off using free software like DisplayCal if you’re on a budget.

    #36653

    Vincent
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    AFAIK ArgyllCMS does not use traditional 4 color matrix, but ask in maillist. DisplayCAL is just a frontend, a GUI.
    All new features regarding colorimetry, ask to ARgyllCMS developer, ArgyllCMS is actively releasing new versions every year or 6 months.

    #36669

    Mark Walter
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    AFAIK ArgyllCMS does not use traditional 4 color matrix, but ask in maillist. DisplayCAL is just a frontend, a GUI.
    All new features regarding colorimetry, ask to ARgyllCMS developer, ArgyllCMS is actively releasing new versions every year or 6 months.

    I know DisplayCal is just a frontend, but thanks for the advice, I will ask Graeme Gill through his mailing list support.

    #36670

    Mark Walter
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    This is due to the White sub pixel. You’ll need to take that into account when profiling your colorimeter. DisplayCal doesn’t support a newer better method.

    Colourspace uses a FCVM method of profiling which improves accuracy on WRGB OLED. It doesn’t use the older FCMM method anymore.

    Calman uses the bodner method to improve WRGB OLED accuracy.

    How exactly can I profile my new Calibrite ColorChecker Display Plus with the Colormunky PHOTO? Or would you recommend not using it, as it is a very old and not ideal spectrometer?

    #36673

    Mark Walter
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    #36677

    EP98
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    I’d be Interested to know what profile method argyllcms uses. I was under the assumption it was an older method based on what people in lift gain was saying.

    The lowest end spectro I’ve seen pros use is an i1 Pro 2/3. I never see them use a colormunki photo. I dont know It’s accuracy and reliability.

    But you would profile your colorimeter with it just the same in DisplayCal in the meter profile tab.

    You won’t know how accurate the meter profile creation was.

    And colorimeters are not consistent. I have two i1 Display Pro OEM’s (Calibrite is just a rebrand of the same meter) and they both measure differently.

    Close but still enough to cause visible delta errors. Best way is to profile your colorimeter yourself on your own display using your own spectro.

    i1Display Pro on Amazon   ColorMunki Photo on Amazon   i1Basic Pro 2 on Amazon  
    Disclosure: As an Amazon Associate I earn from qualifying purchases.

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