Epson 600 - Manual (Page 48)

Advanced Scanning
Page 41
(The mouse pointer displays as a black triangle
when the Alt or Option key is pressed.) The
software makes your selection black and adjusts all
lighter tones accordingly.
Adjusting Image Appearance Using Tone
Curves
When an image needs adjustment, it is usually
because the image is too dark or too light. However,
it’s not unusual that only parts of an image need
adjustment. In such cases, you can use a tone curve to
adjust only those tones in an image that are too dark or
too light.
A tone curve displays the richness of the various tones
in an image, from light tones to darker tones. These
tones refer to shades of gray between black and white,
or the saturation (intensity) of a color. You can adjust
the gray (or color) tones in the middle range (midtones)
as well as the highlights and shadows, by changing the
shape of the curve.
TWAIN.bk : advanced.fm5 Page 41 Monday, September 8, 1997 2:06 PM