DJI Phantom 4 quadcopter rc drone phantom 4 with HD Camera for film making

DJI Phantom 4 quadcopter rc drone phantom 4 with HD Camera for film making   Product Description   FAQ   What is ActiveTrack?
ActiveTrack allows an aircraft to track a moving subject without a separate GPS tracker. Simply tap on the mobile device screen inside the DJI GO app to select the subject to be tracked. The aircraft will lock on the subject and start tracking it automatically from a safe distance. What is TapFly?
TapFly means you can fly in any direction with a tap of the finger, without a remote controller. With Obstacle Avoidance turned on, the aircraft will automatically avoid obstacles, slow down or hover when required, provided that the scene is bright enough ( < 300 lux) or too bright ( > 10,000 lux).   What is the Phantom 4 Obstacle Sensing System?
The Phantom 4 is equipped with an Obstacle Sensing System that constantly scans for obstacles in front of it, allowing it to avoid collisions by going around, over or hovering.   Why does the Phantom 4 have a composite core?
The advanced composite core embedded into the aircraft greatly increases rigidity, minimizing unwanted vibrations. This ensures the precision and performance of the inertial measurement unit (IMU). The weight of the aircraft is also reduced through this composite.   What changes were made to the Phantom 4 remote?
The Phantom 4 introduces a Sport mode, accessible through a new trio of modes, P, S and A.
P (Position) mode is the standard mode, giving access to normal flight as well as Intelligent Flight Modes, ActiveTrack and TapFly.
S (Sport) Mode unlocks maximum flight speeds of up to 44mph (72kmh)
A (Attitude) Mode remains the same and removes satellite stabilization in flight. It allows the Phantom to move more smoothly and naturally. The ‘Playback’ button on the top right of the remote controller has been changed into a ‘Pause’ button that lets you put the Phantom into hover during any Intelligent Flight Mode, ActiveTrack or TapFly with a tap.   What improvements have been made to the Phantom 4 Vision Positioning Unit?
The Vision Positioning System now uses four sensors to increase hovering accuracy and reliability, creating a more controlled flying experience. Its sonar system has been improved and now functions from up to 10 meters off the ground. In ideal situations, these combine to give the Phantom 4 Vision Positioning System a vertical hover accuracy of +/- 0.1 m and a horizontal hover accuracy of +/- 0.3 m. etc.