http://kck.st/xrUQ6u
We just launched our Kickstarter Project for the 50 Dollar Follow Focus. As you can see by the images, it is not the typical follow focus setup, but I assure you, it works just as well. It has no backlash, the belt it ships with fits the majority of lenses, while we do have an option for larger lenses if needed, it is CNC machined of of aircraft grade aluminum, adjusting the tension is as easy as turning the knob, moving the handle, and turning it back. It is ready for anything you throw at it.
We are production ready, just using Kickstarter to help pay for better tooling, and a bulk buy of materials needed for high quantity production.
Feel free to ask any questions.
Keifer