Declarationproperty Brightness: TIEDoubleList;
Specifies the Brightness value. Allowed range is -1000 to +1000.
Allowed values can be assigned to Brightness.CurrentValue property. To see which values your scanner supports consult the Brightness.Items array, or Brightness.RangeMin, Brightness.RangeMax and Brightness.RangeStep.
You can also limit scanner user interface allowed values removing some Brightness.Items items or changing Brightness.RangeMin, Brightness.RangeMax and Brightness.RangeStep.
Twain Property: ICAP_BRIGHTNESS
Note: Use IsCapabilitySupported
to detemine if this capability is supported by the current scanner