Learn to adjust tonal levels and you can transform poor images that lack contrast into dynamic pictures that display vivid whites and dark rich blacks. As Cambridge in Color, a photography site notes, “Most images look best when they utilize the full range dark to light which can be displayed on your screen or in a print.” Applications such as Photoshop and GIMP have levels tools that can help you expand an image’s brightness range by making its black levels black and its white levels white. Tips Warnings Writer Bio

How to Brighten Whites   Darken Blacks in GIMP  6 Steps  - 98