Calibration QD-OLED

[Bob78]

Hello,

I would like to calibrate my screen with your software and an i1 DisplayPro sensor.
I got an error; is my sensor too old?

Can you tell me which options to choose to correctly calibrate my screen, an MPG 341CQPX QD-OLED?

The screen reference on the product sheet indicates 10 bits. Why does Windows 11 indicate 8 bits?

In your software, I can choose up to 16 bits. Does Windows 11 take this setting into account?

Thank you for your attention.

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[Ben]

What are you calibrating for?   It is Display Cal 3.8.9.3 ?

Your sensor is not to old.   You can look on https://colorimetercorrections.displaycal.net/   for a ccss .

Reddit might help you too.   Good news it is Gen 1 oled panel https://www.reddit.com/r/ultrawidemasterrace/comments/1d70br9/msi_341cqpx_is_finally_official/

If it is brand new it might not have a ccss.   You can use a generic one or one with the same panel buy a different brand.    Do not use a ccmx .   Someone will tell you which one to use.   I do not know.

[Ben]

My guess would be this one.  https://colorimetercorrections.displaycal.net/?get&type=ccss&manufacturer_id=MSI&display=MPG341CX%20OLED&instrument=i1%20DisplayPro%2C%20ColorMunki%20Display%2C%20Spyder4&html=1  .  Still iffy for me since I can ot find mpg341cx oled to see if it is a family of qd oled or a oled family.   google qd oled ccss .

[Ben]

Run a uncalibrated report and it will tell the bit depth.    Most panels actually are 8 bit.   They use a technique called frc to blend 2 colors together by flashing them fast.   Your video drivers and Windows controls frc .    It is hard to control Windows though.   HDR mode enables frc on Windows 11.   It wont hurt if you run it 10 bit and it is 8 bit.   Look for banding in a 16 bit grey scale pattern.    Most SDR content is in 8 bit so it does not matter.

• This reply was modified 10 months, 2 weeks ago by Ben.

[Vincent]

Hello,

I would like to calibrate my screen with your software and an i1 DisplayPro sensor.
I got an error; is my sensor too old?

Which error? / no

Can you tell me which options to choose to correctly calibrate my screen, an MPG 341CQPX QD-OLED?

Ben’s answer

The screen reference on the product sheet indicates 10 bits. Why does Windows 11 indicate 8 bits?

BC your graphics card and/or you GPU configuration /pixel format /framerate

In your software, I can choose up to 16 bits. Does Windows 11 take this setting into account?

Win/macos/linux work in 8/10bit. Content is sent to GPU this way

DisplayCAL VCGT calculates grey calibration up to 16bit, the GPU Tables storing grey calibration:
GPU Driver 8/10 IN -> VCGT 16bit if GPU can hold it -> 8/10 out (ideally as in AMD card, dithered from 16)

so

Some App (N bits) -> renders to 8/10bit (driver in) -> VCGT (16bit if GPU can hold it)  -> DVI/DP/HDMI

Thank you for your attention.

• This reply was modified 10 months, 2 weeks ago by Vincent.

[DaniJ]

First thing you’ll need to do on a QD OLED is a perceptual match to a different calibrated screen to get rid of the green tint.

[Author]

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