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S T E P 4
Unadjusted
Gamma Curve
If you want to
increase the
light areas ...
Drag the mid-tones of the input side
(scanned image) into the highlights of the
output side (displayed image)
If you want
reverse the
shadows and
highlights ...
Reverse the starting and end points of the
line to reverse shadows and highlights.
You can edit the gamma curve directly by changing the shape of the line on the graph.
When you change the gamma setting by manipulating the curve, you can perform fine
adjustments in the brightness of only the shadows, only the highlights, or both the
shadows and highlights.
Hint
• You cannot use this feature with a Black & White (Line), color or high
definition color file that has been set with ColorSync.
Manipulating the Graph
The following example show you how to manipulate the graph to change the
gamma settings. This is only an example. When you test these settings yourself,
you can see the changes in the gamma settings immediately reflected in the preview
window or the browser to achieve many interesting effects.
Tone Curve Settings
(If the image is in color, the colors are
switched to their complementary colors.)