The Ozone filter allows you to manipulate the color of an image with incredible flexibility and accuracy. Inspired by Ansel Adams’ Zone System for still photography, we have created "The Digital Zone System". Just what is the Digital Zone System? The world around us contains an infinite palette of colors, tones and brightness. To reproduce this vast range of brightness, the Digital Zone System takes the spectrum of image values and divides them into 11 discrete zones, using proprietary image slicing algorithms. Zones can be created using luminance, hue. saturation, average, red, green, blue, cyan, magenta, and yellow values.  Look at how the image below is divided into hue zones.