At every major swimming event, the competitors aren't the only ones in the pool. In order to bring you footage from the various races, cameras from various news and photo agencies litter the bottom of pools. Traditionally, these have been remotely triggered, but a photographer had to guess where the swimmer would be when placing their camera. This year, photo agency Getty has a new piece of tech. Photographers Al Bello, Clive Rose and Adam Pretty are all in Rio for the 2016 Olympic Games, and have been using a robotic rig that gives them far greater flexibility.