ORIS PDF Tuner Version 4.4.8 User Manual - image2output - Support

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25 Gradation Changes and Tone Value
Corrections
Note:
ORIS PDF Tuner allows you to make global color changes using gradation
curves and tone value corrections. This functionality is available for
all image formats except linework. Changes can be applied to all color
separations and also to individual separations.
To Change Color Gradations
Press F11 or select IMAGE | COLOR GRADATION. The COLOR GRADATION
window appears (see Fig. 25-1). It displays a linear gradation curve.
If no gradation curve is displayed, repeatedly select MODE in this window
until the SPLINE mode is active (indicated in the status area on the left).
Refer to How to Change Color Gradations (page 25-3) for more details.
To Make Tone Value Corrections
Press +L (Mac OS) or CTRL+L (Windows), or select IMAGE | TONE COR-
RECTION. The TONE CORRECTION window appears (see Fig. 25-6). Refer
to Correcting Tone Values (page 25-7) for more details.
If you only want to modify a particular image area, create or select a restricting
mask (see page 22-13) before starting the COLOR GRADATION or
TONE CORRECTION function.
ORIS PDF Tuner Version 4.4.8 User Manual 25-1
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