Microtek ArtixScan 4500t Reference Manual page 99

Gradation tool continued...
You can also use the Black and White Eyedropper tools to define the Saturation
Range.
To do this: Click the Eyedropper tools in the Gradation dialog box. Then move to
the thumbnail image in the dialog box or to the preview image in the Preview
window, and choose the setting for your high chroma and low chroma range.
• Use the Black Eyedropper tool to define your low chroma range setting.
• Use the White Eyedropper tool to define your high chroma range setting.
92 Microtek ScanWizard Pro for Macintosh
Black &
White
Eyedropper
tools