CMS Utilities - Color Management for Photographers - page 302

Fig. 8-19 Seen here are two Image Widgets from two different printer profiles. The info pane that extends to the right of each shows the
Profile Quality and the Device Quality. The Profile Quality is broken down for the colorimetric and perceptual tables whereby an average
and max deltaE is shown and an overall profile quality calculated from the two tables. Based on these deltaE values, a physical and
expended gamut percentage is calculated, which again is used to produce an overall device quality rating. Notice that the Pictrography
profile has a higher Profile Quality (9.3) versus the Epson (8.1). However, the gamut of the Epson profile as indicated in the Device Quality
window is the same as the Pictrography (6.2).
rather than a 3D gamut plot. This is just a different way of viewing and
analyzing the color gamut of a profile.
Color Reproduction Quality ColorPursuit also can produce a Color Repro-
duction Quality index, when two or more widgets are linked. To do this, I
first create an Image Widget in a particular color space, and load a rep-
resentative image as seen in Fig. 8-20. I then click the Linked Widget
button, which, as the name implies, links to the first Widget, and I pick
an output device. The Color Reproduction Quality is calculated based
upon these two profiles (source and destination). Notice that I have two
linked widgets with the same source output profile [U.S. Web Coated
(SWOP) v2)]. However, I have two different RGB working spaces for the
source: sRGB named Display 1, versus ColorMatch RGB named Display
3, in the widget window.
Once again, ColorPursuit provides average and maximum deltaE
values. It also calculates a percentage of reproducible colors in the Color
Reproduction Quality area of the widget and provides a preview of the