Message
Re: [colorvision_group] QTR Linearization Values
2008-02-08 by CDTobie@aol.com
In a message dated 2/7/08 10:49:19 PM, tom.husband@... writes:
What are the values the spectro produces? The numbers I get range
from 2.07 down to 0.11. The linearization values that come with QTR
for Silver Rag, for instance, range from 97.38 down to 5.16. Are we
talking apples and apples here or is one Lab and the other density?
97 to 5 would be L*a*b*, 2 to .1 would be visual density (or the way you did it, relative density). Definately a mismatch. Go back, calibrate on the white tile, and export Lab values, if thats what the QTR values use...
C. David Tobie
International Product Technology Manager
Digital Imaging & Home Theater
Datacolor Inc.
CDTobie@...
www.datacolor.com/spyder3
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