[argyllcms] Re: ColorMunki measurement drift

  • From: János, Tóth F. <janos666@xxxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Mon, 4 Oct 2010 22:41:37 +0200

I made a little test with my colormunki today. I started with a cold
instrument (I stored it on room temperature which is about 21 celsius now)
and I finished when I found that it is acclimatsed on the display.

X Y Z L* a* b*
Start: 95.195947 99.972961 106.284484 99.989544 -2.079784 -17.648406
~30 mins later: 88.419973    93.215504    102.176694    97.314992
 -2.656245    -19.419053
After recalibration: 95.097234 99.987446 111.229739 99.995146 -2.276078
~30 mins later: 93.573958    98.511497    109.942828    99.421566
 -2.475485    -21.096534
Next Recalibration: 95.182700    100.076849    111.851893    100.029707
 -2.275996    -21.314656
~30 mins later: 94.517763    99.480522    111.220334    99.798786
 -2.442673    -21.295370

The daylight color temperature started from ~6350 and ended up at ~6650K

I measured these on my display which I calibrated yesterday (the target was
It was powered up all day (in both times) and I waited for the
acclimatization as well (in both times).

My ColorMunki shows the usual behavior when it warms up: decreasing
luminance, increasing color temperature.

On the other hand, the acclimatized instrument shows a little drift on the
display side as well. I think I can live with it.
But... what about a display like the EIZO CG243w? Would I use my colormunki
on it if I have one?
(Yes, because I want to set up a hardware profile which is different from
the factory setups, just like now with the Dell U2410, but if I would use it
on the "standard way" like the most users...)

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