Help Needed with Calibration for LG 32GR93U

[MRL998]

I recently purchased an LG 32GR93U monitor and I also have an i1 Display Pro (Wacom Edition).

I tried calibrating using the 27GR93U ccss file from the database with DisplayCAL, but I encountered the following two issues:

1. I set the color temperature to 7500K and adjusted the RGB gains as instructed. However, after calibration, the white color appears visibly green compared to other screens calibrated at the same color temperature.
2. After calibration, all other colors have very small errors, except for blue, which has a particularly high error (>4). When applying the calibration results, the blue color visibly shifts towards purple.

I have tried using the built-in PFS spectrometer and also limiting to sRGB in the monitor settings, but these changes did not resolve the above issues.

Attached are screenshots of my settings. I would greatly appreciate any help or advice on these problems!

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[violetleaf]

For starters, “Mode” should be set to “LCD”. The Refresh setting is used for CRT and Plasma displays. I wonder if this will correct your issue.

Second, you could try calibrating with a white point closer to the native panel white point of around 6500K.

Could you also post a screen shot of the special correction graph and chromaticity diagram of the correction you’re using?

[Vincent]

I recently purchased an LG 32GR93U monitor and I also have an i1 Display Pro (Wacom Edition).

I tried calibrating using the 27GR93U ccss file from the database with DisplayCAL, but I encountered the following two issues:

1. I set the color temperature to 7500K and adjusted the RGB gains as instructed. However, after calibration, the white color appears visibly green compared to other screens calibrated at the same color temperature.

whatever whitepoint visual errors can be corrected with visual whitepoint editor.
sources of error can be wrong colorimeter correction, i1d3 frmaware sensivuty curves not matching actual colorimeter sensivity curves or your own visual system not matching CIE 1931 2 degree for that particular led backlight.

Use relative colorimetric if making LUT3D for some D7500 profile.

1. After calibration, all other colors have very small errors, except for blue, which has a particularly high error (>4). When applying the calibration results, the blue color visibly shifts towards purple.

If validating againts profile (no simulation), it means profile does not match behavior. It may happen with matrix profile and with a 3d mesh (XYZLUT) it may happen due to low nubr of nodes in the mesh.

I have tried using the built-in PFS spectrometer and also limiting to sRGB in the monitor settings, but these changes did not resolve the above issues.

Attached are screenshots of my settings. I would greatly appreciate any help or advice on these problems!

[Vincent]

For starters, “Mode” should be set to “LCD”. The Refresh setting is used for CRT and Plasma displays. I wonder if this will correct your issue.

Custom colorimeter corrections CCSS are created, or were created due to a bug, with refresh = YES.
He’ll need to edit CCSS and set it to NO, but this will not be relevant for whitepoint measurements, so it can be left as YES (refresh)

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