How to Assemble and Use the Ronin-S Focus Motor - YouTube
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Amazon.com : DJI Ronin-S/SC Focus Wheel - Rotated Wheel to Control Focus When Using Cameras, Compatible with Ronin-S/SC Cameras, CAN/S-Bus Selector Switch, Camera Accessories - Black, CP.RN.00000008.01 : Electronics
Amazon.com: DJI Ronin-S Part 17 Focus Motor : Electronics
Buy DJI Ronin Focus Motor - DJI Store
DJI Ronin S Focus Motor used with the Ronin S Focus Wheel to control the focus iris and zoom
DJI's New Slate of Ronin-S Gear Includes External Focus Motor, Battery Grip and Universal Mount - Studio Daily