Using The Tone Curve - Epson PERFECTION 1640 SU Reference Manual

Using the Tone Curve

The tone curve provides you with a versatile means for adjusting
the intensity of the colors of the image being scanned. You can
adjust the shadow, mid-tone, and highlight values, which helps
to ensure well-balanced coloring of the image.
Note:
❏ Use of the tone curve is recommended for fine adjustments after you
have previewed the image and adjusted the highlights and the
shadows using Auto Exposure and the Image Controls dialog box.
Use of the tone curve to make initial settings is not recommended.
❏ The Tone Correction button appears dimmed and is not available
when Pixel Depth is set to Black & White and Halftone is set to
None, or B/W Option is set to Text Enhancement
Technology in the Image Type dialog box.
The tone curve is located in the Tone Correction dialog box, which
appears when you click the Tone Correction button in the
Manual mode window. The following section describes how to
use each of the controls in the Tone Correction dialog box.
Tone Correction button
Scanning Basics
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