Acknowledgments Once again thanks to the folks at Course Technology PTR, who recognized that a cam- era as popular as the Nikon D5100 deserves in-depth full-color coverage at a price any- one can afford. Special thanks to executive editor Kevin Harreld, who always gives me the freedom to let my imagination run free with a topic, as well as my veteran produc- tion team including project editor Jenny Davidson and technical editor Mike Sullivan. Also thanks to Bill Hartman, layout; Katherine Stimson, indexing; Sara Gullion, proof- reading; Mike Tanamachi, cover design; and my agent, Carole Jelen, who has the amaz- ing ability to keep both publishers and authors happy. About the Author With more than a million books in print, David D. Busch is the world's #1 selling dig- ital camera guide author, and the originator of popular digital photography series like David Busch's Pro Secrets and David Busch's Quick Snap Guides. He has written nearly two dozen hugely successful guidebooks and compact guides for Nikon digital SLR models, and several dozen additional user guides for other camera models, as well as many popular books devoted to dSLRs, including Mastering Digital SLR Photography, Third Edition and Digital SLR Pro Secrets. As a roving photojournalist for more than 20 years, he illustrated his books, magazine articles, and newspaper reports with award- winning images. He's operated his own commercial studio, suffocated in formal dress while shooting weddings-for-hire, and shot sports for a daily newspaper and upstate New York college. His photos have been published in magazines as diverse as Scientific American and Petersen's PhotoGraphic, and his articles have appeared in Popular Photography & Imaging, The Rangefinder, The Professional Photographer, and hundreds of other publications. He's also reviewed dozens of digital cameras for CNet and Computer Shopper. His advice has been featured on National Public Radio's All Tech Considered. When About.com named its top five books on Beginning Digital Photography, debut- ing at the #1 and #2 slots were Busch's Digital Photography All-In-One Desk Reference for Dummies and Mastering Digital Photography. During the past year, he's had as many as five of his books listed in the Top 20 of Amazon.com's Digital Photography Bestseller list--simultaneously! Busch's 100-plus other books published since 1983 include best- sellers like David Busch's Quick Snap Guide to Using Digital SLR Lenses. Busch earned top category honors in the Computer Press Awards the first two years they were given (for Sorry About The Explosion and Secrets of MacWrite, MacPaint and MacDraw), and he later served as Master of Ceremonies for the awards. Visit his web- site at http://www.dslrguides.com/blog.