From How to Shoot Video that Doesn’t Suck, Page 127:
Some videos take place in an ethereal neverland called “limbo”—a seamless, glowing, solid color wash. Frequently black or white, limbo backgrounds are cheap to shoot and they totally focus your attention on the people in front of them.
In this great looking trailer for a film/book package called “The Wisdom Book” by photographer Andrew Zuckerman, the limbo was created in-camera: Zuckerman hung a seamless white background behind his subjects to stay beautifully focused on their faces and words.
You can do the same by hanging a nine-foot roll … Read the rest