3dLut returns funky colors

[muffin]

Hi, I have been using DisplayCal to calibrate my FSI CM250 OLED Monitor for years with Resolve.

Now I bought a new M1 mac laptop and I’m having problems getting proper results. I updated the Argyill and Display cal and now Displaycal recognizes my monitors.

I use a i1Display Pro with a correction made by a Colormunki Design/Photo iStudio.

I use the standard settings. Video 3D LUT for Resolve (d65, Rec 709/ Rec. 1886)

But something is wrong because the Cube LUT that creates makes the blue channel all funky. I attached images of the final SDI output, and the tone curve. The blue channel seems way off. I did a quick test to make a 3dLut with just the spectrometer and it seems fine. Is it possible that my Colorimeter got broken? If so, which one would you recommend to buy as a replacement, because I see that the i1Display Pro seems to be discontinued. In B&H I see this other brand but looks the same: Calibrite ColorChecker Display Pro

Thank you very Much

Ivan C.

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[Vincent]

More likely that something in your desktop changed output while measuring patches to create display profile (used as input data to make LUT3D)
Easy to test: assing default EDID profile to FSI (if connected through common GPU), validate with no LUT3D. That spikes in TRC should not show.

Then redo.

[muffin]

Thanks Vincent for your reply.  I’m waiting to get my monitor back (I sent it to FSI headquarters for upgrading to the latest firmware and re calibrate). When I get it back I’ll try again with your suggestions. Although I admit that half of the terms you say are like Sci-fi to me.  🙁 But I’ll just use google and hopefuly I can try to validate the LUT3D and see what’s up.  🙂

[Author]

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