The PT-E05 underwater case has been specially customized for the Olympus E-520 and is waterproof up to a water pressure equivalent to a depth of 40 meters. With its durable, high quality polycarbonate construction, it protects the camera from water while also cushioning it from knocks and bumps on land. As a genuine advantage to the underwater photographer, the photographer can make use of the Live View function and use the large 2.7"/6.9cm LCD instead of the viewfinder. The flash connectors allow optional use of up to two UFL-2 underwater flash units. Five interchangeable lens ports allow the optional use of 14-42mm, 14-45mm, 11-22mm or 14-54mm, 7-14mm, 8mm Fisheye and the 35mm as well as the 50mm Macro lens. External flash necessary.