Touching your camera to re-focus its lens while filming your next budget masterpiece isn't necessarily a good idea, and lugging a laptop around to handle the task remotely isn't exactly practical for today's modern gorilla filmmaker. The $400 USB Follow Focus looks to be a much more simple solution. It's quite simply a knob in an aluminum enclosure that connects over mini-USB. Plug it in and welcome to your next Oscar -- or Emmy, anyway. There are a suite of buttons that can be used to define focal presets and it has compatibility with most Canon HD DSLR shooters. The results? Check the two