AFC is NOT drone depended !
For drones that support AFC:
While recoding video there are 3 ways to focus:
1.Manual Focus (MF)
2.Auto Focus (AF)
3.Auto Focus Continous (AFC)
With (AF) the camera only performs an autofocus after starting up the drone and at the moment you hit the record-button.
With (AFC) the camera also performs an autofocus whenever the drone is not moving for a moment.
A negative side effect of (AFC) is that a Waypoint Action ‘Take Photo’ will be ignored if at the same time the camera is focussing.
Another negative side effect is that it will be clearly visible when the camere is refocussing during video recording.