[argyllcms] Re: Calibrating a projector with a X-Rite DTP92

  • From: Graeme Gill <graeme@xxxxxxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Mon, 05 Feb 2007 02:02:48 +1100

Frédéric wrote:

Hmmm, so the DTP92 can't be used? What about the DTP94? Is there anybody here using it for projector calibration? Could someone make a test?

It's hard to say. The DTP92 is intended to be a colorimeter, and if
it were perfect, it wouldn't matter what the spectrum was, and in fact
it would do a better job than a typical 31 band spectrometer when
faced with a spiky spectrum. In practice it's filter curves will
not be exactly the CIE 2 degree observer, and hence it can
be optimized for maximum accuracy a particular spectrum.

The DTP was close to th screen (about 50cm), with an angle of 30° (to avoid its own shadow).

Right, so it sounds like it should have given a half reasonable

Well, we could try such optical adapter...

Better posting the calibration and profile data first.

Graeme Gill.

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