Adjust Brightness/Contrast

  You can adjust current selected objects' brightness and contrast by using Transform>Adjust Brightness/Contrast menu item or corresponding toolbar button.

options

Brightness

Specifies the image's light intensity: Moving the slider to the right to lighten the image, while moving the slider to the left to darken it.

Contrast

Specifies the amount of difference between color and brightness in image:Moving the slider to the right to darken the shadowed areas in an image, while moving the slider to the left to brighten them.