[argyllcms] How do I measure individual patches on my display?

  • From: Leonard Evens <len@xxxxxxxxxxxxxxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Fri, 06 Mar 2009 22:42:43 -0600

I've created a gray scale in gimp of 11 successive squares going from
pure black (0,0,0) to pure white (255,255,255) going up in equal

I want to read the values on my display as seen by my Eye-One-Pro.  I am
trying to use spotread , but I apparently don't understand what I'm

1.  I use -N,  but it still insists of calibration. 

2.  It asks me about FWA, which I don't understand.  I skipped that and
just pressed a key to get XYZ and Lab readings.   But the readings don't
seem to make sense.  In particular the L readings don't decrease
consistently from white to black.  I've tried -d, -db, and -e.

Leonard Evens <len@xxxxxxxxxxxxxxxxxxxxx>
Mathematics Department, Northwestern University

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