Sea frogs Wide Angle Lens for Underwater Housing (67mm Round Adapter) . This device is designed to correct the viewing angle under whom. Most housings have a flat connection glass, so the view under who is reduced by 30%. To restore the original viewing angle, you would need to install this device. The installation must be done underwater, as the distance between the front of the case and the back of the lens must be filled with water. Compatible models of Sea Frogs sub-body housings: For Sony A5000/5100 A6000/6300 A6500 SeaFrogs NEX 5 (16mm and 18-55mm) NEX 5N (16mm and 18-55mm) NEX 5R/5T (16-50mm) NEX 6 (16-50mm) NEX 7 (16-50mm) RX100 - RX100 IV RX100V Sea Frogs MPK-URX100A Sony Original Canon EOS M3 (22mm) G5X G7X G7X Mark II G9X G15, G16 S100, S110, S120 For Olympus E-M5 E-M5 II E-M10 E-P5f TG4 Sea Frogs TG5 Sea Frogs Nikon 1 J5 (10mm and 10-30mm) For Fujifilm X100S Panasonic GM1. And other sub-body housings that have 67mm thread on the connector of the housing.