The Olympus FCON-T02 Circular Fisheye Converter & CLA-T01 Adapter Tough Kit is designed for the Olympus Tough TG-6 Digital Camera. The Circular Fisheye Converter provides you with a wider field of view, & features the waterproof and dust resistant features of the camera itself. The kit also features a CLA-T01 Adapter, which is what allows the easy attachment of the converter lens to the camera body. The physical design of the lens features a nitrogen-filled design to prevent fog that can be caused by temperature differences. The fisheye aesthetic can be modified by using the camera's optical zoom, creating a diagonal fisheye look.