Amazon.com description: Product Description: 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. Introductory chapters will help you get comfortable with the basics of your camera before you dive right into exploring creative ways to apply D3100 file formats, resolution, aperture/priority exposure, and automatic exposure features. Beautiful, full-color images illustrate where the essential buttons and dials are, so you'll quickly learn how to use their D3100, and use it like a pro!