DisplayCal does not recognize my monitor

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  • This topic has 54 replies, 6 voices, and was last updated 1 month ago by Dido.
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  • #30296

    Vincent
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    -that CCMX is not for you unless you made it (it seems that you made it… so OK, share CCSS 3nm to community if you can, this will help others)

    -take a look on the color where it is happening (#002) and reference values (because you are using an OS with a broken color management engine)
    Hint: profile with BPC ON=infinite contrast… which is not true. Nothing to be worried about, that missmatch is what max ΔICtCp is showing.

    -Contrast is abnormally low, HDMI limited range issues again?

    #30297

    Dido
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    I am no longer using HDMI, the mac is connected U-SBC> Displayport and the color management system is that of the minimac … it cannot be altered or modified …. there are native profiles of the system, srgb, D65, D50 Adobe RGB …. I don’t know … not I understand . I also bought the X RITE STUDIO sensor which I was hoping would help me 🙁

    #30298

    Vincent
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    Read again what I wrote:

    -profile with BPC ON=infinite contrast… which is not true. Nothing to be worried about, that missmatch is what max ΔICtCp is showing.

    -Contrast is abnormally low, HDMI limited range issues again?

    Profile, ***BY USER CHOICE*** (because OS limitations) stores that display has infinite contrast (BPC on). RGB 0 in => 0cd/m2 out. That is not true, that is what that high error is saying, what profile says and actual behavior do not match. Nothing to be worried about.

    Also, 400:1 for an IPS is an abnormal value because AFAIK such sRGB office/multimedia/general use IPS sRGB model has not uniformity compensation. If it had such feature, disable it if it does not worse color uniformity so it becomes unusable.
    This has nothing to do with measurement device. It is related to you mac computer, monitor and connection.

    Plug it to another computer & measure contrast to discard issues on display… chances are high on mac GPU + connection to be blamed for this, not monitor.

    • This reply was modified 1 month ago by Vincent.
    • This reply was modified 1 month ago by Vincent.
    #30301

    Dido
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    Sigh 🙁

    #30302

    basdenhond
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    unsubscribing (sorry, the official way does not work)

    #30326

    Dido
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    Good morning everyone, good morning Vincent, here I am again. I have read and studied a bit and I think I finally got a good calibration even with my M1 minimac.
    Maybe I’m still a bit high in contrast, I read that the dell U2715H gives maximum linearity with a contrast of about 900: 1.
    I always have that ΔICtCp value that I can’t control … but still I think it’s a good calibration. One more question if I can …. but that deviation I have on dark colors can be determined by the thousands of hours of work of the monitor? (bought in 2015 I think I don’t remember exactly)

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    #30328

    Vincent
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    I always have that ΔICtCp value that I can’t control … but still I think it’s a good calibration. One more question if I can …. but that deviation I have on dark colors can be determined by the thousands of hours of work of the monitor? (bought in 2015 I think I don’t remember exactly)

    No, already explained many times. That error is because your choice of profile… and you are forced to use that type because the limitations of your OS.

    It’s not related to calibration, it’s your profile saying that display has infinite contrast.

    #30329

    Dido
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    Sorry Vincent, it wasn’t displaycal criticism. By now I am aware of the os problem and nothing can be done about it, at least until apple releases a new system that integrates those parameters and that can be adjustable, or that makes external GPUs visible … let’s hope !!

    #30330

    Vincent
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    I’m saying that there is no issue with your cal since contrast seems ok and grey looks ok too.

    That kind of ΔICtCp will happen to all users that willingly choose to use BPC… including Win users, most of us, at least for Ps, Lr, web and general use.
    It won’t matter what tool you use to create profile. If you choose to use BPC (because of the benefits) there wil be a mismatch between measured black and profile black. That’s all.

    #30331

    Dido
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    Thanks Vincent ….
    Then I’ll try without 🙂 Meanwhile I learned how to use the program, then we discovered that HDMI is not good for developing photographs and that it is a TV standard … Then we learned that the USB-C port of the minimac perfectly supports Displayport , with the right cable …. in short, we have made progress and I thank you for this !!!! You also sold a Display studio !!!! 🙂

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