The Brightness/Contrast adjustment allows to make simple adjustments to the tonal range of an image. Watch our video tutorial to learn more about this adjustment.
Select Image -> Adjustment -> Brightness/Contrast... to display the adjustment parameters in the Settings Panel.
You can also use a Brightness/Contrast adjustment layer (Layers -> New -> Adjustment Layer -> Brightness/Contrast...) which will affect all the underlying layers without changing their content.
Brightness (-200..200). The parameter adjusts the brightness of an image. By increasing the value, all pixels become lighter; by decreasing the value the image appears darker.
Contrast (-200..200). The parameter increases (at values greater than 0) or decreases (at values less than 0) the difference between light and dark areas of an image.
Fixed Preview Area check-box. If the check-box is enabled, the parameter changes are displayed in the small area bounded by the dotted line. If the check-box is disabled, the changes are shown in the area visible in the Image Window.
Click on Default to restore the default values.
Click on OK to apply all changes and close the dialog box.
Click on Cancel to close the dialog box without applying any changes.