Neewer A-B Stop Follow Focus C2 with Gear Ring Belt for DSLR Cameras Such as Nikon,Canon,Sony DV/Camcorder/Film/Video Cameras,Fits 15mm Rod Mounts,Shoulder Supports
Completely gear-driven design for slip-free, accurate, and repeatable focus movement - This Follow Focus Integrated with A/B Hard Stops which have easy begin/end setups for fast repeatable racking between two points, and make focusing lenses that have no

