DisplayCal has never worked!

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This topic contains 28 replies, has 2 voices, and was last updated by  Fred (@fred) 6 days, 9 hours ago.

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  • #18114

    Florian Höch (@fhoech)
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    That looks reasonable, much more what I’d expect.

    #18115

    Fred (@fred)
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    Great! I’ll try the full 1500 patch calibration with these settings and let you know how it goes! Thanks again!

    #18116

    Fred (@fred)
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    Ok, so tried this with the default 1500 patches and got an error message. I’ve actually never been able to finish the 1500 patch setting. Message below.

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    #18118

    Florian Höch (@fhoech)
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    If Resolve isn’t stable over prolonged periods of time, you’ll have to reduce the number of patches. The logs of the last run would interest me, please attach those.

    #18119

    Fred (@fred)
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    ah ok. How can I export the logs? Looked around couldn’t find anything.

    #18120

    Fred (@fred)
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    Another question I had was if I should definitely be setting my tone curve to ‘rec1886’ ? What sort of result would I get by leaving it ‘as measured’? I have a Flanders Scientifc and the gamma on it is set to 2.4.

    • This reply was modified 6 days, 18 hours ago by  Fred.
    • This reply was modified 6 days, 18 hours ago by  Fred.
    • This reply was modified 6 days, 18 hours ago by  Fred.
    #18124

    Florian Höch (@fhoech)
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    How can I export the logs?

    Menu “Tools” -> “Show log window” -> click “Save compressed archive…”

    Another question I had was if I should definitely be setting my tone curve to ‘rec1886’ ?

    There’s two places where you can set a tone curve: The calibration tab and the 3D LUT tab. When creating a 3D LUT, the 3D LUT setting overrides whatever is set on calibration, so this can be set to “as measured” (and is by default) to save some time.

    I have a Flanders Scientifc and the gamma on it is set to 2.4.

    Is it an OLED or conventional LCD? For OLED, Rec. 1886 is equivalent to 2.4 (due to OLED’s zero black level).

    #18125

    Fred (@fred)
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    Got it, maybe i’ll try it with ‘as measured’ then. Also I’ll get that report to you soon.

    As far as my monitor its an LCD.

    #18126

    Florian Höch (@fhoech)
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    As far as my monitor its an LCD.

    Ok, in that case you may want to use “pure” gamma 2.4 (set output offset to 100%) on the 3D LUT tab instead of BT.1886, due to the LCD’s lower contrast ratio (likely IPS, so I assume around 1000:1).

    #18127

    Fred (@fred)
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    here is the log!

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    #18129

    Florian Höch (@fhoech)
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    Thanks. Resolve seems to stop updating the patch area in your case. You’ll probably have to figure out when and why that happens, i.e. closely monitor the RGB values shown on the connection window and check whether the patch updates when new values arrive. Make sure the machine doesn’t try to enter power saving while measurements are still running.

    There’s an unrelated peculiarity I’d like to investigate: In one of the latest logs (2019-06-13 07:04) I see an “AttributeError: ‘NoneType’ object has no attribute ‘lower'” a few seconds after program launch, likely the result of some user action. The error is caught and handled though, so it’s nothing of utmost concern, but do you remember what you did right before that error?

    #18136

    Fred (@fred)
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    Thanks. Resolve seems to stop updating the patch area in your case. You’ll probably have to figure out when and why that happens, i.e. closely monitor the RGB values shown on the connection window and check whether the patch updates when new values arrive. Make sure the machine doesn’t try to enter power saving while measurements are still running.

    Got it. yea I have it so the computer doesn’t fall asleep or even screensavers come on. Only the iMac’s display turns off. Should this be changed?

    There’s an unrelated peculiarity I’d like to investigate: In one of the latest logs (2019-06-13 07:04) I see an “AttributeError: ‘NoneType’ object has no attribute ‘lower’” a few seconds after program launch, likely the result of some user action. The error is caught and handled though, so it’s nothing of utmost concern, but do you remember what you did right before that error?

    I do not, I don’t think I did anything out of the ordinary. I typically just jump into the settings then open Resolve to get the calibration going.

    On another note, I ran the calibration again and it finished but I have that bright green, yellow Predator vision…. I did the default settings for Resolve but adjusted delay to 1300, Tone Curve in Calibration ‘as measured’, reduced patches to 1148,  and Tone Curve in 3D LUT Tab to Gamma 2.4 Absolute, output offset 100. I attached log again if that helps!

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    #18138

    Florian Höch (@fhoech)
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    Only the iMac’s display turns off. Should this be changed?

    If really only the iMac display turns off, that should be fine in theory, but who knows what macOS or resolve might do behind the scenes. It should be safer to disable any form of screensaver/powersaving completely during measurements.

    Profile check complete, errors: max. = 92.765126, avg. = 25.604135, RMS = 27.952402

    Resolve stopped updating the patch area again.

    #18139

    Fred (@fred)
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    Ok, so ran it again and this time I even turned off the display from sleeping and I wiggled the mouse every so often. Finished and looks pretty good. Funny enough after all this I think my display was pretty well calibrated as there was very subtle changes. Just a touch warmer and a tiny, tiny bit darker blacks. Haha. Ran it st the 1148 patch size.

    • This reply was modified 6 days, 9 hours ago by  Fred.
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