The design of the SportDiver wide-angle turret lens uses high-quality optics arranged in an array of 4 elements/4 groups, delivering sharp edge-to-edge sharpness. The internal elements are made of fully multi-coated optical glass. The Wide Angle Dome Lens is made of optical polycarbonate with a hard, anti-scratch coating.
The lens has an effective focal length of 18.2 mm film equivalent when used with a 26 mm phone or camera lens. The lens is waterproof up to 60m.
Features:
    Get 3x closer and 43% wider field of view
    Optical design corrects barrel distortion and improves edge-to-edge sharpness
    Works with SportDiver lens adapter (SL081), SeaLife DC2000, Olympus and other underwater housings with 52 mm lens port
    7x wide-angle conversion
    Fully multi-coated optics for maximum light transmission
    Lens can be attached/removed under water
    Precision high-quality optics with 4 elements/4 groups (internal optical glass)
    Polycarbonate Dome lens with scratch-resistant hard coating
    Includes neoprene lens cover.
    Waterproof up to 60m