A Pixsurvey V3 flight controller is recommended, developed based on FMU V3, which is more suitable for VTOL aerial survey - Pixhawk family - ArduPilot Discourse
Ardupilot APM 2.8 Mega Flight Controller Board – FactoryForward India
Selecting a Flight Controller for you Drone | Best Boards (2019)
New ArduPilot flight controller: the Navigator from Blue Robotics! - Blog - ArduPilot Discourse