I would like to thank my family, my friends, and most importantly, my clients for allowing me to disappear into my cave while writing this book. Your understanding and flexibility allowed me to focus on the task at hand.

I also want to thank the following photographers for letting me use their images:

Some of these photographers have Web sites. Please visit them to see more of their work. All photos without a credit are my own.

Thanks also to the editing team at Wiley: copy editor Lauren Kennedy, who noticed so many small details that made big differences; technical editor Mike Vraneza, who used his expertise to check the technical points of this book; and project editor Chris Wolfgang, who managed this project from start to finish.

I especially want to thank Courtney Allen, Acquisitions Editor for Wiley Publishing, who so kindly invited me into the Wiley fold. Without her, this book would not be a reality.