How much bird's-eye view can a drone fly at an altitude of 500 meters?

At present, the maximum relative height of UAV aerial photography is 500 meters (from the takeoff point of the aircraft). According to the relevant regulations of civil aviation, the octagonal area 20 km long and 10 km wide from the center of both ends of the runway is a no-fly zone, and the relative flying height outside the octagonal no-fly zone within the range of 10 km to 20 km is 120 m.

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Unmanned Aerial Vehicle (UAV), abbreviated as UAV in English, is an unmanned aerial vehicle that is operated by radio remote control equipment and its own program control device, or operated by an airborne computer completely or intermittently. Compared with manned aircraft, drones are often more suitable for tasks that are too "stupid, dirty or dangerous". Uavs can be divided into military and civilian according to their application fields. On the military side, drones are divided into reconnaissance planes and target planes. In terms of civilian use, UAV+industrial application is the real demand of UAV; Applications in aerial photography, agriculture, plant protection, micro-selfie, express transportation, disaster relief, wildlife observation, infectious disease monitoring, surveying and mapping, news reporting, power inspection, disaster relief, film and television shooting, creating romance and other fields have greatly expanded the use of drones. Developed countries are also actively expanding industry applications and developing drone technology.