[argyllcms] Re: is my colorimeter broken?

  • From: Karl Beckers <karl.h.beckers@xxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Mon, 15 Jun 2009 15:13:19 +0200


On Jun 13, 2009, at 1:36 AM, Graeme Gill wrote:


Karl Beckers wrote:
Result is XYZ: 4717.548485 5240.499321 1804.802846, Yxy: 5240.499321 0.401055 0.445513 
Ambient = 16463.5 Lux, CCT = 3961K (Delta E 41.546625)
Closest Planckian temperature = 3293K (Delta E 32.139549)
Closest Daylight temperature  = 3393K (Delta E 30.456772)


I would suspect then that your instrument is broken then. Even if
the white point is a bit different (and this can be the case
depending on the construction of the light bulb, voltage etc.)
I would expect it to be close to the Planckian locus, and
32 delta E is 10 times bigger than the 3 that I got.
(The Z or blue channel seems to be a bit too high).

Graeme Gill.



Graeme,
for the record: It seems XRite thinks so, too. Had I known how easy this is with XRite, I might have thought of contacting them first. My RMA number is on its way. 

Thanks,

Karl.

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