Advanced Scanning
By lightening the shadows and darkening the highlights (raising the left side of the curve and lowering the right) you can balance the tones in the image.
Follow these steps to adjust an image using tone curves:
1.Preview the image.
2.Click the Tone Curve icon 
on the EPSON Perfection 600 main window. The Tone Correction dialog box appears.
3.Select the color to adjust.
There are three color channels that make up the full spectrum of color: red, green, and blue.
If there’s too much of a particular color in an image, select that color from the Channel
Otherwise, leave the Channel set to Master (all).
4.Change the curve by clicking the curve, then dragging it to a new position.
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