It isn't inexpensive, though the interchangeable camera and interchangeable lens system, dual controller and dual battery system make this a specific Instrument for pros which could even now be used by any drone pilot. The US Federal Aviation Administration (FAA) calls any small, unmanned plane system a drone. Consumer drones https://charlesr471lud6.ssnblog.com/27878251/detailed-notes-on-advanced-technology-institute