The Phantom 3 Professional User Manual description of the FPV mode is a little confusing, but, through experimentation, I have worked out that it operates just like the Follow mode EXCEPT that the gimbal artificially introduces an apparent "bank angle" into the video feed when the right control stick is moved right or left to command lateral movement.The result is video which supposedly simulates a conventional airplane or helicopter banking into a right or left turn, but the system is improperly conceived since it introduces the artificial bank angle when the drone is commanded to move laterally left or right, but not when it is commanded to turn left or right (using the left control stick).Thus, unlike in an airplane or conventional helicopter, this artificial bank angle is not accompanied by any heading change - a confusion for anyone trying to experience a "First Person View". If the artificial bank angle was introduced when the left control stick was moved right or left (resulting in aircraft rotation and, therefore, changes in heading) the effect would make sense. I encourage programmers to make this modification.