The Freefly MOVI is a digital 3 axis stabilization system that relies on both active motor driven components and passive inertial stabilization.
Passive stabilization relies on the principles of inertia (tendency of an object to resist change in its motion) and requires that the camera is well-balanced in the Pan, Tilt, and Roll Axes.
Active stabilization refers to the techniques of using sensors to measure the camera’s Pan, Tilt, and Roll movements and counteract those movements using motors attached to the 3 axes.
These 2 types of stabilization work in concert to achieve the smooth and stable shots for which the MOVI is well known.

DJI RS 4 Pro supports the second-generation native vertical shooting for further elevated efficiency. You can release the horizontal plate and secure it into the vertical position for an effortless switch to vertical shooting.
DJI RS 4 Pro introduces a new joystick mode switch that allows for the control of either the gimbal movement or the lens zoom via the joystick. In zoom control mode, cinematographers can perform Power Zoom for PZ lenses, Clear Image Zoom, and external focus motor zoom. When paired with two Focus Pro Motors, RS 4 Pro allows cinematographers to adjust the lens zoom via the joystick and precisely control the focus via the dial, facilitating smooth and effortless lens control.
The roll axis has added dual rolling bearings, facilitating easier adjustments.
The second-generation automated axis locks have been upgraded to achieve smaller gaps, further reducing gimbal shakes when locked.
The ecosystem compatibility has also been improved.