With more than a million books in print, David D. Busch is the world's #1 selling digital 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 more than a dozen hugely successful guidebooks for Canon and Canon digital SLR models, as well as many popular books devoted to dSLRs, including Mastering Digital SLR Photography, Second Edition, and Digital SLR Pro Secrets. As a roving photojournalist for more than twenty 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 and articles have appeared in Popular Photography & Imaging, The Rangefinder, The Professional Photographer, and hundreds of other publications. He has also reviewed dozens of digital cameras for CNet and Computer Shopper, and his advice has been featured in National Public Radio's All Tech Considered. When About.com named its top five books on Beginning Digital Photography, debuting 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 120-plus other books published since 1983 include bestsellers like David Busch's Quick Snap Guide to Digital SLR Lenses. Visit his website at http://www.dslrguides.com. Rob Sheppard is a photographer and videographer who says his favorite location is the one he is in at any time. He is the author/photographer of hundreds of articles about photography, and more than 35 books. Sheppard is a well-known speaker and workshop leader, and a Fellow with the North American Nature Photography Association. He was the long-time editor of the prestigious Outdoor Photographer magazine and helped start PCPhoto (Digital Photo). Presently he is editor-at-large for Outdoor Photographer. Visit his website (www.robsheppardphoto.com) and blog (www.natureandphotography.com).