Movo MFF400 Premium Motorized Follow Focus and Zoom Control Video Shoulder Rig for HD DSLR Cameras Upgraded version of Motorized Follow Focus Rig with Super Quiet Durable Motors with Focus/Zoom Presets Zoom/Focus Control Switches with 4 Programable Preset Switches Located on the Main Controller Zoom/Focus Control Switches with Speed Control Dials Located on Handles Upgraded Motor System Compatible with Most Lenses Powered by Canon LP-E6 type batteries (sold separately)