Apple Color OneScanner 600/27 - Manual (Page 61)

Changing the tone (brightness and contrast)
You can improve the appearance of a scanned image by adjusting the tone
before you scan the image. Tone is a measure of brightness and contrast—the
intensity of blacks and whites, or colors, in a scanned image.
The way your monitor is set up affects the way an image appears on the
screen. For information, see your monitor manual.
Brightness
Brightness determines the overall lightness of a scanned image.
m With increased brightness, the scanned image generated by the scanner
will be lighter.
m With decreased brightness, the scanned image will be darker.
Contrast
Contrast is a measure of differences between light and dark tones.
m With increased contrast, all light tones become increasingly lighter, and all
dark tones become increasingly darker at the same rate.
m With decreased contrast, all light tones become increasingly darker, and all
dark tones become increasingly lighter at the same rate.
To change the tone of a scanned image:
1 In the Dispatcher window, click Scan to open the Apple Color OneScanner dialog box.
2 Click Preview.
3 Drag to select the portion of the image you want to scan.
53 Scanning Images