To Adjust Brightness, Contrast, and Fade of an Image
Click Modify menu ObjectImageAdjust.
Select the image to modify.
In the Image Adjust dialog box, to adjust brightness, contrast, and fade, use the appropriate slider or enter a value.
The default value for both brightness and contrast is 50. You can adjust to a maximum brightness of 100 or to a minimum of 0. The default fade value is 0. You can adjust to a maximum fade of 100.