We call the new Profoto B1 an off-camera flash, because it is not a speedlight and it is not a monolight. It is a new kind of flash that brings a whole new way of shooting.
It has TTL, so you get a perfect exposure in a flash. It is battery-powered and cordless, so you can take it with you wherever you go and put it wherever you want. Add to that the power, speed and light shaping possibilities that Profoto lights are known for, and you have an off-camera flash that makes great light easy.
Photographer Christian van Hanja used these revolutionizing features to catch a spinning bmx cyclist in action with perfect exposure every shot. (via Profoto)
For more information about Christian van Hanja, go to http://www.edgerider.net/