Feature: 1. The focus ring can be adjusted according to the size of the lens. 2. Inner follow focus is adopted high precision eddy design. 3. Can be left and right adjustment, easy to install on the camera. 4. Suitable for 52mm-85mm mount lens. 5. With limit function, protect the lens from damage. 6. It is mainly used to adjust the focus of the lens when shooting video with DSLR digital camera and camera. It is usually used together with the bracket. It can be installed quickly and simply, standard guide rail can be installed, various mount lens can be used, and has excellent damping design. With the use of focus regulator, the focus adjustment is accurate and natural, convenient for the cameraman to focus quickly and accurately, making film and television shooting more efficient. 7. The focus follower is a kind of design in line with human mechanics, which changes the motion direction when human hands are put on the lens to raise the focus, making it more convenient for us to operate, and reducing the picture shaking caused by human hands pushing directly on the lens. At the same time, the use of focus follower and focus ring can also increase the focus stroke of the lens, which is conducive to accurately controlling the focus of the picture. Specification: Condition: 100% Brand New Item Type: Follow Focus Material: plastic + metal Color: as picture shown Package List: 1 x Follow Focus1 x Follow Focus Ring1 x Inner Hex Wrench