Adjusting Tone Curves Of Individual Colors - Epson Expression 800 User Manual

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Table of Contents

curve anchor

All Colors button

Adjusting Image Quality

There are several ways to change the shape of a tone curve:

Click & drag

Sliders

Numeric values

Adjusting Tone Curves of Individual Colors

When you first access the Gradation Curves dialog box for a color image,

all of the color channels are active. To modify the tone curve, either:

Click the

All Colors button to select all the RGB colors

Click on a color button to select a specific color channel; the tone curve

line changes to that color

Then make your modifications as described in

Using the Tone Curve

As you drag a curve anchor, the curve follows the

movement of the anchor, but your adjustment to

one anchor doesn't affect the other anchors.

To allow changes to a single anchor to affect the

adjacent anchors, you can activate the adjacent

anchors. Hold down the Alt key (Windows) or

option key (Macintosh) and click on the adjacent

anchor; the anchor turns white. Hold down the Alt

key (Windows) or option key (Macintosh) and click

the anchor again to deactivate it (it turns black).

Adjust the slider controls below the curve. See

Using the Tone Curve Sliders

adjusting the image with these sliders.

Type a number (+ or –) in a tone value field; each

field adjusts an anchor point on the curve.

Sliders.

for information on

Using the Tone Curve

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