Proaim Rail System is specifically designed to work with follow focus and long lenses. Proaim rail system is lightweight and flexible, allowing a camera operator to work precisely and efficiently. If follow focus is used to simplify and enhance the focusing technique, the rod support system along with quick release and base plate is used to lessen the burden of the camera. A rail system helps take the weight off the front of the camera and takes the strain off the lens mount. It also supports follow focus systems. Proaim follow focus and rail system are essential components for filming.