DJI Ronin-S Focus Motor works in combination with the optional Ronin-S Focus Wheel to control focus, iris, or zoom. In conjunction with the Focus Wheel, the rotation range is assignable between points A and B, and a function button on the side of the motor lets you switch status between focus, iris, and zoom. Gear rings are included for lenses without 0.8 MOD gears. Works with Optional Ronin-S Focus Wheel …