The <b>SeaLife SL050 0.5x Wide Angle Dome Lens</b> will increase the field-of view by 100% over the already wide 31mm lens (film equivalent) of the DC2000 underwater camera. The dome lens allows for amazing underwater images and offers incredible perspective of the undersea landscape. The 0.5x lens design uses high grade optical glass components arranged in a 5 element / 5 group array with an integrated dome lens port that delivers crisp edge-to-edge sharpness. All optical elements are fully, multi-coated to prevent internal glare and maximize light transmission. The lens has a 16mm effective focal length on the DC2000 and is waterproof to 200ft (60m). The inner airspace is back-filled with nitrogen to prevent fogging. The rotatable light shade prevents unwanted glare from external lighting, as well as protect the dome lens from bumps and abrasion. The lens fits all SeaLife DC-series cameras and all other cameras with a 52mm thread mount, and includes a 52mm DC adapter ring (SL977).