Ozone is a unique Photoshop filter that allows photographers, designers, and artists to manipulate the color of an image with incredible flexibility and accuracy. Inspired by Ansel Adams's Zone System for still photography, Digital Film Tools has created "The Digital Zone System." To reproduce the infinite palette of colors, tones, and brightness of the world around us, the Digital Zone System takes the spectrum of image values and divides them into 11 discrete zones. With Ozone, the color and brightness of each zone can be independently adjusted until you've painted a new picture. All zones can be adjusted and viewed in context, and you don't have to commit to the adjustments until all zones are corrected.