[argyllcms] Re: Can Eye-one Pro failure the calibration?

  • From: "Marco N." <gialandra@xxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Mon, 4 Oct 2010 09:32:51 +0200

Il giorno 03/ott/2010, alle ore 23.06, Roger Breton ha scritto:

> Did you leave the EyeOnePro attached to the monitor for ONE hour before
> making the measurements?
> Because of thermochrism effects (EyeOnePro's don't have Peltier-cooled CCD
> like more expensive spectroradiometers), their response when measuring at
> the edge of their sensitivity threshold are heavily influenced by their
> internal temperature I am told. Leaving them on the monitor for ONE hour
> before helps minimize this effect.
> / Roger

Maybe I misunderstood, but the lack of a cooling system should cause the drift 
of the instrument calibration (observable in the change of the measurements of 
black) and not in the measurement of the black immediately after the 
calibration of the instrument. I misunderstood?

Thank you

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