Avision AV3200C - Manual (Page 30)

4-7
8-Bit Color
an 8-Bit Color image provides 256 color hues in the image.
The file size of a 256 color image is 1/3 the size of a
24-Bit Color image.
8-Bit Color Image
24-Bit Color
A 24-Bit Color image consists of three 8-bit color channels.
The red, green, and blue channels are mixed together to
create a combination of one billion colors which give a more
true-to-life quality to the image. Choose 24-Bit Color if you
are scanning color photos.
24-Bit Color Image