Sonja Schenk (Venice, CA) is a freelance producer and film video editor who has worked on a number of popular television shows and movies. She is also the author of Digital Non-Linear Desktop Editing and co-author of both earlier editions of The Digital Filmmaking Handbook.
Ben Long is a freelance writer, photographer, and videographer based in San Francisco. A long-time computer journalist, he has written hundreds of features, reviews, and how-to's for magazines such as Macworld, MacWeek, Macworld UK, MacUser, Computer Graphics World, Maximum PC, and eMediaWeekly. He is currently a Senior Editor for CreativePro.com, where he writes a regular digital photography column. His most recent books include Apple's Pro Training guide for Aperture, Real World Aperture, Getting Started with Camera Raw, and Complete Digital Photography, 3rd edition. As a photographer and videographer, his clients have included Blue Note Records, 20th Century Fox, the Pickle Circus, Global Business Network, Head Start, the Oklahoma Arts Institute, and the National Endowment for the Arts. You can learn more about him and his work at www.completedigitalphotography.com.