[argyllcms] Re: Dell U2711 - is it any good?

  • From: Graeme Gill <graeme@xxxxxxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Wed, 22 Jun 2011 09:55:10 +1000

Rishi Sanyal wrote:
Right, but these new devices, being colorimeters, can't get the
'spectral response of any display'... you'd need a spectrophotometer
for that. So I don't know how they can claim that these would work
with any display in the future. If that's what they're claiming.

To get an accurate result using a ccmx you need at least
the spectrometer, the colorimeter and the display, and you get an
accurate correction for just that serial number colorimeter.
You may get a ccmx that will improve other colorimeters of
the same type, but it won't be as accurate.

With the scheme above, all you need is for someone with a spectrometer
to measure the display, and then everyone else with any colorimeter
that uses this scheme can use the measurement to create a n accurate
correction matrix for their particular colorimeter. That reduces the
scope of the problem considerably.

Graeme Gill.

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