Graphics Programs Reference
In-Depth Information
Fig. 7-1
The compare
option in ProfileMaker
Pro's MeasureTools shows
the deltaE of a Kodak
Matchprint made from a
Commercial versus
SuperWhite substrate from
the same Creo contract
proofing system. Note that
the MeasureTool has a
number of different ways
to calculate deltaE; seen
here is the latest method
of calculating differences
(deltaE 2000). The worst
patch is outlined in red
and I've clicked on it to
show the deltaE is 4.81.
That one patch just
happens to be the white of
the stock.
from press sheet to contract proof. Therefore, we need to either receive
an ICC profile from the print shop producing the contract proof or make
one ourselves.
Sidebar
DeltaE Revisited:
In Chapter 1 I discussed deltaE and how this is a useful method of com-
paring two colors and calculating the differences. As with most aspects of color management,
the ways in which deltaE is calculated is evolving thanks to the ongoing efforts of color scien-
tists (please read some sarcasm into that last sentence). There are at least five different for-
mulas for calculating deltaE, the differences I can't even begin to fathom. The latest formula is
