Just had the International Drone Expo come through here. The largest UAV trade show. From $10 toys to specialized $100,000 law enforcement versions. It had the latest rotorcrafts, UAV innovations, applications and reveals the development trends of the tech. Some could take drone photos with your smartwatch, with one key control and with voice-control. From beginner, enthusiast and professional grade; aerial photography drives the huge number of multi-rotor companies and technology.