Avision AVA3 400 - Manual (Page 39)

Scanner Operation
4-12
True Color
A 30-bit Color image consists of three 10-bit color channels.
The red, green, and blue channels are mixed together to create
a combination of one billion(2
30
) colors which give a more
true-to-life quality to the image. True Color is the best choice
if you want to scan a color photo.
Figure 4-9 Halftone Image