The Nikon D3100 is Nikon's new entry-level dSLR, suitable for photographers new to digital SLR photography. It features a 14.2 megapixel sensor, full HDTV video, and ISO up to 12,800. DAVID BUSCH'S NIKON D3100 GUIDE TO DIGITAL SLR PHOTOGRAPHY shows you how, when, and why to use all the cool features, controls, and functions of the D3100 to take great photographs of anything.