[argyllcms] Re: FWA Compensation

  • From: <robert@xxxxxxxxxxxxxxxxxx>
  • To: <argyllcms@xxxxxxxxxxxxx>
  • Date: Wed, 10 Dec 2014 13:09:04 -0000

> Jan-Peter Homann Sent: 10 December 2014 12:28 wrote:
M1 is D50 measuremnt with a defined UV part in the measuremnt lightning
and M2 a measuremnt with No UV in the measuremnt lightning. A comparison
of M1 and M2 measurements gives a clear indication of the amount of OBA
/ FWA in the measurement probe.>

Hi Jan-Peter,

Yes, I did a test (using i1Profiler) that shows the OBA quite clearly in the
paper:

Copier paper gives:
  M1 Lab readings of 92, 2.5,-9.7
  M2 Lab readings of 91,0.6,-3.8

Canson Baryta gives:
  M1 Lab readings of 98, 0.2,-1.3
  M2 Lab readings of 98,-0.4, 1.1

Canson PhotoHiGloss gives:
  M1 Lab readings of 95, 0.6,-6.4
  M2 Lab readings of 95,-1.1, 0.3

Permajet Oyster gives:
  M1 Lab readings of 95, 1.8,-14.8
  M2 Lab readings of 94,-1.1,-1.9

You can see that the Permajet Oyster is a scary paper!

Robert


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