Features: High-quality 200mm optical fisheye lens shade designed for camera diving housing. Equipped with M67(67mm) lens adapter ring port. Pressure resistant is up to 60m/ 197ft, and with X0.7 underwater amplification coefficient. Optical glass and antireflective coating-film make the image perfect without distortion. Suitable for underwater photography, enable you to take more vivid photos. Only for cameras with microspur.