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Hello,
I recently added an Eizo CG2700x to my color suite and have had success calibrating it using the method outlined by Stuart in his Eizo APAC tutorials (replacing CN7’s EDR with Stuart’s “forged” EDR, calibrating grayscale and WB in CN7 with the panel’s native/unclamped gamut and “no compensation” checked in the preferences, then profiling the display in DisplayCAL via Resolve’s pattern generator and loading the LUT back into CN7).
However, when I attempt to match my LG C1 to the Eizo, the LG is so green that I am unable to bring the two to a match. I understand that because of differences in display technology I will need to match their white point by eye and set the C1’s LUT rendering intent to “relative colorimetric,” but I have maxed out the RGB adjustment sliders in the C1’s white balance menu (R is at +31, G is maxed out at -50, and B is at -22) and the white point is still substantially green/cyan. To my eyes the Eizo is a true D65 white (the Eizo’s whitepoint after my calibration matches the whitepoint of it’s factory 709 mode), so I am inclined to trust the Eizo over the LG, but I feel like I shouldn’t have to push these sliders this far to reach a perceptual D65 on the C1? I’ve profiled this C1 in the past and I’m able to reach a measured D65 by only nudging the RGB sliders by a couple points, but the resulting whitepoint is perceptually much too green compared to my LCD’s.
Additionally, when I push the C1’s RGB sliders this far, the resulting verification is substantially worse than if I target a measured D65 with the sliders only nudged a few points (max delta errors under 2 when targeting a measured D65, and max delta errors over 4 when targeting a perceptual match to the Eizo with the C1’s RGB sliders maxed).
Is this a normal level of whitepoint variation between LCD/OLED technology? Is there a better way of matching the two displays to each other?
I understand that because of differences in display technology I will need to match their white point by eye and set the C1’s LUT rendering intent to “relative colorimetric,” but I have maxed out the RGB adjustment sliders in the C1’s white balance menu (R is at +31, G is maxed out at -50, and B is at -22) and the white point is still substantially green/cyan.
Some TVs have and starting presets fro WP and RGB gains on top of that. IDNK if C1 does.
To my eyes the Eizo is a true D65 white (the Eizo’s whitepoint after my calibration matches the whitepoint of it’s factory 709 mode), so I am inclined to trust the Eizo over the LG, but I feel like I shouldn’t have to push these sliders this far to reach a perceptual D65 on the C1? I’ve profiled this C1 in the past and I’m able to reach a measured D65 by only nudging the RGB sliders by a couple points, but the resulting whitepoint is perceptually much too green compared to my LCD’s.
Additionally, when I push the C1’s RGB sliders this far, the resulting verification is substantially worse than if I target a measured D65 with the sliders only nudged a few points (max delta errors under 2 when targeting a measured D65, and max delta errors over 4 when targeting a perceptual match to the Eizo with the C1’s RGB sliders maxed).
If you can get a 100% white patch without ABL a little above your desired brigtness there is another way of doing it, usually avoided becase on LCD it limit contrast an unique grey levels.
Choose the preset that is closer to your visual D65.
Use RGB gains to get as close as you can.
Use DisplayCAL visual whitepoint editor to get a visual D65 by “software RGB gains”.
Measure that white with your i1d3+proper CCSS or spectrophotometer.
Make a synth profile with your desired RGB primaries, TRC and set as white that white (for example Rec709 g2.4 and your alt white)
Create a LUT3D with that alt white (source ICC) and a mesh description of your C1 (XYZLUT ICC no GPU Cal) and abs colorimetric intent.
Validate visually the results.The ugly side is tyhat you are forced to use a LUT3D engine and load that file into it, like Windows Desktop DWMLUT app or Resolve.
Calibrite Display Pro HL on Amazon
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