A single camera setup involves using only one camera to film shots sequentially, as opposed to a multi-camera setup where there are multiple cameras filming different angles simultaneously. Single camera setups are commonly used for dramas, documentaries, and comedies as it allows for more creative control during filming and editing. However, it is more time-consuming than multi-camera as each shot must be filmed individually. Documentaries like Planet Earth utilize advanced camera techniques like drones and gyro-stabilized cameras to capture high-quality wildlife footage in challenging environments.