In this very basic but informative tutorial, you'll learn how to build a follow focus for your Canon 5D Mark. This method has the virtue of being very cheap, using just a clamp, nuts and bolts, a bit of wire, a rubber band and some shrink wrap. But used well, you can probably achieve some fairly professional looking results with this rig.
Want to master Microsoft Excel and take your work-from-home job prospects to the next level? Jump-start your career with our Premium A-to-Z Microsoft Excel Training Bundle from the new Gadget Hacks Shop and get lifetime access to more than 40 hours of Basic to Advanced instruction on functions, formula, tools, and more.