DJI Ronin S Tips and Tricks Record Button Focus Wheel Infinity Spin Canon 5D4 - YouTube
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
DJI Ronin | How to Use the DJI Ronin Focus Motor - YouTube