1.Compatible for and other DSLR Camera Camcorder DV Video; Fits industry standard 15mm rod mounts and 60mm center to center distance2.It can be easy to mount and take down; Using drive can adjust camera focus in a more accurate and smooth way.3.Its ring belt is suitable for less than 100mm diameters lens.4.Non-slip design with grooved knob; The white mark ring is made of plastic and it can be used to mark the scale on follow focus.5.It is great for follow focus .Product Type: Follow FocusApplication: Lens smaller than 85mm apertureMaximum load: 2-5 kgProduct weight: 0.2 (KG)size:17.5x12.5x8CMMaterial:Aluminum alloycolour: Yellow + BlackPackage Contents:1 x Follow Focus1 x Follow focus ringOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.