MadVR 3Dlut brightens the image

[Moritz Fischer]

Hello,

I’m using Displaycal with a Colormunki Display and want to refine the calibration on a Samsung SRGB-TV. Previously I’ve adjusted white balance and gamma as far as possible with HCFR. Using standard settings with single curve + matrix, Gamma 2.2, standard white balance and so on. Display got calibrated with Displaycal, very little deviation from the “pre-calibrated” state as espected.

In a second step I’ve created a 3Dlut for MadVR on MPC-HC from this profile and imported it. Also standard settings, so Rec1886, Gamma 2.4 absolute and so on.
However enabling the 3DLut in MPC-HC brightens and desaturated the image, although the display itself is calibrated to Gamma 2.2. Shouldn’t the Gamma 2.4 3DLut darken the image instead? The behaivour is the same, no matter if playing SDR or HDR sources.

Are the settings correct? Is this behaivour expected or am I double calibrating in this case? Image doesn’t look that off, I am just suprised that there is such a big jump on a “pre-calibrated” display, especially in the direction of increased brightess. If you need further details I can post them. Hope you can help me with my question.

Thanks

• This topic was modified 3 hours, 30 minutes ago by Moritz Fischer.

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[Ben]

Can not see your settings.   The Faq says to set the nits.  https://github.com/clsid2/mpc-hc/issues/2869 .   Make sure your not double tone maping.   Meaning tone curve is in os and in video player pipeline.   The video pipeline is the 3d lut.  I wish we had 3d lut desktop without a addon.   There is a 3d lut for the desktop but that has to be kept up to date or keep Windows not up to date.  Not sure if I explained it good.  Directions are not very good for me either.

[DaniJ]

Shows us the settings and optionally attach the 3DLUT and profile used to generate it.

[Author]

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