Hi, I don't know how many users do monitor profiling (I remember an old discussion with Pierre...). It has been a long time since I did it but now that I tried to do it again I have unsatisfactory results in terms of brightness. The DeltaE is great (0.35) but the gamma is really high, such that it hurts the eyes after a short time. Also, the custom calibration disables the brightness/lightness OSD controls so I can't lower it. I used the Rec709 color space which has gamma 2.4 instead of the normal 2.2 value of the sRGB space. Actually with a higher gamma you should get darker results. My monitor (Dell UO2716D) is a wide gamut type and natively supports various color spaces: sRGB; Rec709; AdobeRGB and DCI-P3 (98%). It should have no problem with Rec709 at gamma 2.4. Can you explain why I get too bright a result? I use Argyll CMS with DisplayCAL and Datacolor Spyder5 colorimeter.
Hi Andrea, It's been a long time since I recalibrated my monitors, so I've kind of forgotten the procedures... I also use Argyll CMS with DisplayCAL, my colorimeter is an i1 Display Pro. I don't go through the 1D LUT curve generation. Instead, I choose the "as measured" option for the white level. I set the monitor brightness to my liking (rather dark like the environment of the room concerned), directly by the monitor controls. In my case, I chose the "Rec. 1886" tone curve even though my monitors don't really have the qualities of real monitors dedicated to color correction. I like the very smooth result and I find that I can pretty well evaluate what the video will look like when presented on a TV. Pierre Le 22-07-07 à 02 h 28, Andrea paz via Cin a écrit :
Hi, I don't know how many users do monitor profiling (I remember an old discussion with Pierre...). It has been a long time since I did it but now that I tried to do it again I have unsatisfactory results in terms of brightness. The DeltaE is great (0.35) but the gamma is really high, such that it hurts the eyes after a short time. Also, the custom calibration disables the brightness/lightness OSD controls so I can't lower it. I used the Rec709 color space which has gamma 2.4 instead of the normal 2.2 value of the sRGB space. Actually with a higher gamma you should get darker results. My monitor (Dell UO2716D) is a wide gamut type and natively supports various color spaces: sRGB; Rec709; AdobeRGB and DCI-P3 (98%). It should have no problem with Rec709 at gamma 2.4. Can you explain why I get too bright a result? I use Argyll CMS with DisplayCAL and Datacolor Spyder5 colorimeter.
Thank you for the various advice. I have spent a lot of time testing and the situation has improved, but I am not completely satisfied. If I adjust the display before calibration I get acceptable brightness and the wrong colors. If I adjust the display during calibration I get very good colors but a too high "gamma". In the end the best (but not perfect) result is to adjust brightness before and colors during calibration. I also tried using Argyll from the command line, but I get a DeltaE = 12 without being able to decrease it... I am left to figure out how to be sure if only one profile is active or if there are multiple overlapping profiles.
Do You use Matrix Correction for your Datacolor Spyder5? IgorBeg Il 08/07/2022 14:19, Andrea paz via Cin ha scritto:
Thank you for the various advice. I have spent a lot of time testing and the situation has improved, but I am not completely satisfied. If I adjust the display before calibration I get acceptable brightness and the wrong colors. If I adjust the display during calibration I get very good colors but a too high "gamma". In the end the best (but not perfect) result is to adjust brightness before and colors during calibration.
I also tried using Argyll from the command line, but I get a DeltaE = 12 without being able to decrease it...
I am left to figure out how to be sure if only one profile is active or if there are multiple overlapping profiles.
Come driver non importo quello originale, ma quello X-rite che va bene anche per lo spyder. L'importante è che riconosca il monitor che è di tipo GB-LED. Il sab 9 lug 2022, 09:44 Igor BEGHETTO via Cin <cin@lists.cinelerra-gg.org> ha scritto:
Do You use Matrix Correction for your Datacolor Spyder5?
IgorBeg
Il 08/07/2022 14:19, Andrea paz via Cin ha scritto:
Thank you for the various advice. I have spent a lot of time testing and the situation has improved, but I am not completely satisfied. If I adjust the display before calibration I get acceptable brightness and the wrong colors. If I adjust the display during calibration I get very good colors but a too high "gamma". In the end the best (but not perfect) result is to adjust brightness before and colors during calibration.
I also tried using Argyll from the command line, but I get a DeltaE = 12 without being able to decrease it...
I am left to figure out how to be sure if only one profile is active or if there are multiple overlapping profiles. -- Cin mailing list Cin@lists.cinelerra-gg.org https://lists.cinelerra-gg.org/mailman/listinfo/cin
Sorry; follow the translation: As a driver I don't import the original one, but the X-rite one which is also good for the spyder. The important thing is that it recognizes the monitor which is GB-LED type. Il giorno sab 9 lug 2022 alle ore 11:33 Andrea paz <gamberucci.andrea@gmail.com> ha scritto:
Come driver non importo quello originale, ma quello X-rite che va bene anche per lo spyder. L'importante è che riconosca il monitor che è di tipo GB-LED.
Il sab 9 lug 2022, 09:44 Igor BEGHETTO via Cin <cin@lists.cinelerra-gg.org> ha scritto:
Do You use Matrix Correction for your Datacolor Spyder5?
IgorBeg
Il 08/07/2022 14:19, Andrea paz via Cin ha scritto:
Thank you for the various advice. I have spent a lot of time testing and the situation has improved, but I am not completely satisfied. If I adjust the display before calibration I get acceptable brightness and the wrong colors. If I adjust the display during calibration I get very good colors but a too high "gamma". In the end the best (but not perfect) result is to adjust brightness before and colors during calibration.
I also tried using Argyll from the command line, but I get a DeltaE = 12 without being able to decrease it...
I am left to figure out how to be sure if only one profile is active or if there are multiple overlapping profiles. -- Cin mailing list Cin@lists.cinelerra-gg.org https://lists.cinelerra-gg.org/mailman/listinfo/cin
Colore correction matrix, ccss or ccmx. Il sab 9 lug 2022, 11:57 Igor BEGHETTO via Cin <cin@lists.cinelerra-gg.org> ha scritto:
Are you speaking about Driver or Color Correction Matrix (CCM/CCMX)?
Il 09/07/2022 11:33, Andrea paz ha scritto:
Come driver non importo quello originale, ma quello X-rite che va bene anche per lo spyder. L'importante è che riconosca il monitor che è di tipo GB-LED. -- Cin mailing list Cin@lists.cinelerra-gg.org https://lists.cinelerra-gg.org/mailman/listinfo/cin
participants (3)
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Andrea paz -
Igor BEGHETTO -
Pierre autourduglobe