Gamma; Histogram - Plustek SmartOffice PS286 Plus User Manual

22 TWAIN Help
To adjust the image gamma:
1. Select the channel.
2. Slide the thumb of the scroll bar to the right or left, or click the arrow signs on
the right and left ends.
The current value is shown to right of the scroll bar.

Gamma

Adjusting the gamma on the Master channel affects the tonal range for all colors
equally.
Adjusting the gamma for the individual Red, Green or Blue channels only affects
pixels containing that color.
Default
Clicking the Default button on the lower right corner revert the settings to its original
values and discard all adjustments you have made.
This feature is not available when Black & White is selected as
Scan Mode.
2.2.2.6

Histogram

All rights are reserved.