The 123 of Digital Imaging Interactive Learning Suite 5.0 - The 123 of Digital Imaging Interactive Learning Suite 5.0 - 123di contains over 4,200 interactive screen-size pages filled with thousands of full color graphics and animations organized into 153 topics. The practical content is highly cross-referenced with digital photography background theory. A publication like no other, the usage of animations and user-interactivity makes 123di an unrivalled and unmatched digital photography learning tool.