I have three Panasonic cameras - a G9, a GH5ii and a GX7. Please help me figure out how to fix the issue of:
Lightroom and ACR read the wrong "as shot" color temperature from the GH5ii while the kelvin value for the G9 and GX7 is within a reasonable margin of discrepancy - on two separate computers.
I'm testing with two separate light sources - one at 3200k and another at 5500k.
With the GH5ii (and two separate top-end Panasonic - Leica lenses) I get an "as shot" kelvin temperature of 2200k while with the G9 Lightroom displays 3100k "as shot". The GX7 is at 2900k, which I can accept as a reasonable discrepancy, but the G5ii's value I find unacceptable.
I checked the RAW files with an EXIF tool to see the recorded set WB temperature and for the G9 it matches perfectly - 3100k set, 3100k displayed as "as shot". For the GH5ii I have set 3200k, the EXIF tool reads 3200k, but Lightroom show 2200k.
I believe this discrepancy also causes my Calibrite colorchecker profile plug-in for Lightroom to give obviously wrong colors and I just can't get a correct color calibration under warm lighting. With the G9 the colorchecker plug-in works fine under the same conditions. I suspect that since 2200k is very close to the bottom limit of 2000k, the calibration corrections may be hitting that limit, thus giving me wrong colors, while the image at 3100k has enough room for corrections.
What can I do to correct the issue?
I'm using the latest camera firmwares, I tried a factory reset of the GH5ii, verified the discrepancy on another computer both on Lightroom and Photoshop with ACR.
I appreciate you spending the time to read this long post!
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