The SEA & SEA 16 MM / F5.6 Wide Angle Lens is a high-quality lens designed for underwater photography enthusiasts. Specifically made for the Motor Marine II or ProMaster EX UNDERWATER camera models, this lens allows for capturing wide-angle shots in stunning detail. With a faster aperture of F5.6, this lens is ideal for low-light conditions and can help photographers achieve sharper images with less blur. The SEA & SEA brand is known for its durable and reliable gear, making this lens a great choice for serious underwater photographers looking to expand their kit. This lens was well cared for and delicately cleaned after every use. No corrosion and the lens glass is perfect. My 100% positive (1600+) feedback speaks for itself. Look at my other auctions for the 20 MM wide angle lens for sale also.