To change the Midtone value, move the Slider to the left or right to change the values in the adjacent text box. The value in the adjacent box will change in the range 0.1 to 10.0 as the slider moves.
Ordinarily, good results can be obtained from your machine by leaving the slider at its default value of 1.00.
The Advanced Selection
The Advanced selection will present features that allow you to modify the Level Adjustment and Tonal Map of the document.
For both the Level Adjustment and the Tonal Map functions, the window displayed contains small representations, known as thumbnail views, of the original and enhanced images (Samples 1 and 2).
To activate the Level Adjustment or Tonal Map functions, click on the Advanced... button at the bottom of the Image Quality tab.
The Advanced... button
When this button is selected, the Level Adjustment window is displayed by default.