Xante Accel-a-Writer 8200 User Manual page 7

For example, if a scanned image is too dark, you can use the printer's
front panel to select a new gamma setting to lighten and enhance the
details. Gamma corrections bring out details that can be lost when
printing at higher line screens or when dark photos are scanned.
Your Accel-a-Writer 8200 offers seven gamma settings, 0 through 6
with 0 as the default. Settings 0 through 5 progressively lighten the
midrange values. If you need a negative (reverse) image, which is
required by some printing processes, you can create one using
gamma 6 rather than using a software application. Figures 7.1 and
7.2 illustrate the effects of gamma correction settings.
1
0
Black
Fig. 7.1 Gamma Correction 0
____________________________________
Gamma 0
Input Levels
White
Advanced Imaging 7-7
1