Adjusting Brightness, Gamma, and Contrast

You can adjust brightness, gamma, and contrast in the Digitizing/Editing window using the following methods:

On the Histogram tab:On the Histogram tab: Click and drag the red bar in the graph.

To adjust brightness, drag the red bar to the right to increase or to the left to decrease.

To adjust contrast, drag the red bar up to increase or down to decrease.
In the Digitizing/Editing window:In the Digitizing/Editing window: Use the Brightness, Gamma, and Contrast sliders.

To adjust a value, move the slider to the right to increase, to the left to decrease.

Curved lines represent gamma changes and can only be modified using the sliders at the bottom of the window.

To reset the item to its original value, click .