The Contrast brush increases or decreases the difference between light and dark pixels on a texture map in the areas that you stroke.

To adjust contrast

1. In the PaintLayers window, select the paint layer you want to edit.
2. In the Paint Tools tray, select the Contrast tool.
   
3. In the Contrast tool properties, set the Contrast property to either increase or decrease the difference between light and dark pixels.

   A positive Contrast value increases the contrast and negative values reduce it. The range is -10 to 10. The default setting is 1.

4. Stroke across the painted texture in the areas you want to affect.

   Contrast is modified in the areas that you stroke.