User manual
18 • Gradation (tonal distribution)
ColorQuartet 5.0 Pro
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2 • To change the default curve, click anywhere on the curve to produce one or more “han-
dles.” Drag the handles until the desired effect is observed in the feedback windo
w.
3 • When finished, click on OK or open another color tool.
How to keep saturated colors saturated
• When a gradation curve is used to lighten an image, saturated colors will tend to become
washed out.
• The Saturation Limit function in the Gradation window compensates for this by preventing
colors above a given chr
oma value (color intensity) from being affected by the gradation
curve. It should normally be activated.
• To set the threshold of the Saturation Limit, move the slider and observe the effect in the feed-
back window.
Adjusting gradation automatically
• When you scan with Magic Touch, ColorQuartet will automatically optimize the gradation of
each image if you activate Gradation in the Auto Functions section of the Magic
Touch window.
• When you scan with Scan Setup, there are two ways of achieving automatic gradation adjust-
ment:
• Both kinds of automatic gradation adjustment are based on an analysis of each individual
image as well as your specification (via the Guide menu) of how big a gradation change you
want to apply.
• For a standard adjustment of the gradation, set the Guide menu in the Gradation window or
Auto Gradation Setup window to 100%. (This is also the level that is applied by Magic Touch.)
• Choose a lower value if you want gradation changes to be applied to a lesser degree, and a
higher value if you want them to be applied to a greater degree.
• If you do not want automatic gradation adjustment at all, set the Guide menu to None.
You will find that even small changes in the curve will produce a
noticeable effect on the image.
• For any given image, you can manually set the Guide menu in the Gradation
window to let ColorQuartet adjust the gradation.
• You can use Auto Gr
adation Setup to give ColorQuartet a default instruction
about whether you want gradation to be adjusted automatically or not, and
to what extent.