Adjusting The Shadow Setting - Epson PERFECTION 1240U Reference Manual

3. To change the highlight level (brightness) of the point you
selected, move the Highlight slider left or right, or enter a
value in the text box. You can enter a value between 61 and
490 for the highlight.
Note:
See "Image Controls" on page 3-19 for further information on
adjusting the highlight level.

Adjusting the Shadow Setting

Shadows, the darkest areas of an image, are the opposite of
highlights.
1. In the Image Controls dialog box, click the eyedropper button
under Shadow.
The mouse pointer changes to an eyedropper, with movement
restricted to within the Preview window.
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Scanning Basics