Remote photography is a variation on aerial air-to-air photography, whereby the camera is mounted onto the external aircraft structure away from the photographer and is triggered remotely using a mechanical or electrical shutter release. The image has to be composed when the aircraft is on the ground, because the photographer has no access to the camera while the aircraft is in flight. Much brainstorming and planning must be done while setting up the camera to get the desired shot. Remote photography is the least common type of aviation photography.