Acknowledgments We would like to thank the people whose talent and hard work made the production of this book possible. At Focal Press, we would like to acknowledge the superb editorial and production staff. We are especially grateful to Laura Lewin, Chris Simpson, and Anaïs Wheeler for their valuable direction, editorial expertise, and patient, but firm, reminders to get things done. At Autodesk, we would like to thank Brittany Bonhomme who worked patiently with us on everything that we needed from Autodesk for this book and Ash Aiad for answering our technical questions about Mudbox. With much appreciation, we thank the Mudbox development team for producing an innovative digital sculpting and three-dimensional (3D) painting program that is intuitive, fun to use, and gets the job done. A sincere thank you to Josiah Hultgren and Andy Runyon at Maxon Computer for answering our questions about Cinema 4D, and thanks to Steve Kondris