Before drones, taking aerial photographs required renting a fixed-wing or helicopter aircraft which as you can guess, was very expensive.
With the drone technology available in today’s market and the high-resolution cameras that come with them, taking aerial images is now a lot more affordable. Images taken from the air offer a perspective that cannot be matched from the ground, and drones can safely operate at much lower altitudes and in more confined spaces than a standard manned aircraft. Using a drone for photography isn't just for amazing aerial photos but you can also see the progress of your house being built, or even sell your current house with the help of their aerial shots!
The possibilities are endless!
Source: Seehigher.com on site filming for the BBC