Avision AV620CS+ - Manual (Page 40)

AV620CS Plus 4-15
Highlight/Shadow:
Highlight refers to the lightest point in a scanned
image while shadow refers to the darkest point.
Using Highlight and Shadow tool together allows you
to extend the range of color and reveal more details
in a gray or color image.
Highlight: 255/Shadow: 0(Normal) Highlight: 210/Shadow:10
Highlight: 200/Shadow:0 Highlight: 255/Shadow: 50