Press Matcher Web User Manual - image2output - Support

WEB«
Spot Color Simulation
Step 7: Optimize Spot Colors
2. Overtype the numeric values in the input boxes on
the right or click the small arrows displayed next to
these boxes.
3. Now the lower color box splits in two, displaying the
edited device color on the right and the original color on the left. The
delta values on the right refer to the edited color.
CMYK
device color
Lab color
4. First evaluate the corrections visually, and then according to the
delta E values.
In some cases, the delta E value may be larger after the color correction,
although the color is visually closer to the original Lab color.
5. Click RESET CMYK if you want to restore the original CMYK values.
6. Click or if you want to optimize additional spot colors. This
applies the changes and loads the previous or next spot color, respectively.
Repeat the process described above (from step 2).
The buttons are displayed as
selected spot color.
or if you have not modified the
7. Click OK to close the dialog, then save the SCG file. Use CANCEL to
close the dialog if you have clicked or beforehand.
About Gamut Warnings
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Edited
device color
There are two independent color gamut warnings in the MANUAL SPOT
COLOR INPUT dialog (see Fig. 15-16):
• A gamut warning displayed to the right and left of the color values
which appears if the deviation between the Lab and CMYK color is
greater than 5 delta E, or if the deviation is greater than 2 delta E
and one of the CMYK values is lower than 0.01 or greater than 99.9.
• A gamut warning displayed on top of the Lab color box indicating
that the Lab color cannot be displayed accurately on your monitor,
because the color distance between the Lab color and monitor color
is greater than 5 delta E.
In this case it is not recommended to correct the CMYK color visually.
ORIS Press Matcher⁄⁄Web Version 1.1 User Manual 15-19
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