With the 52 & 67mm Lens Adapter, you can easily attach lenses and domes to your SeaLife SportDiver smartphone housing to capture wide-angle and close-up photography. The adapter attaches to the SportDiver's lens port and consists of a 67mm ring along with a 52mm insert ring. Other step-up and step-down rings can be used to accommodate various lenses. SeaLife suggests using wide-angle lenses with optical magnification between 0.5x and 0.75x for closer shooting distances while fitting the subject in the frame.