[argyllcms] LUMINANCE_XYZ_CDM2 value varying wildly

  • From: Vallo Kallaste <kalts@xxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Mon, 25 Nov 2019 23:10:49 +0200

Hi

This is related to my previous post about profiling old plasma TV sceen.

What might be the reason that LUMINANCE_XYZ_CDM2 value varies wildly?
The Y value is sometimes off by 3-4 times, screen luminosity is stable
~140 cd/m². Example,
right: LUMINANCE_XYZ_CDM2 "135.595931 140.728794 163.035500"
wrong: LUMINANCE_XYZ_CDM2 "46.764170 48.199392 55.552668"

Product Name:      i1Display3 
Measured display update delay of 71 msec, using delay of 194 msec & 0 msec inst 
reaction
Refresh rate = 100.016309 Hz, quantizing to 0.059990 msec

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