B003TZ52HE Sony DCR-SR47 0.16x High Grade Fish-Eye Lens (180? Diagonal Angle of View) + Stepping Ring (30mm-37mm) + Nwv Direct Micro Fiber Cleaning Cloth

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0.21x (Fisheye) High Definition Digital Lens
Multi-Coated Optical Glass
Metal Casing
Optical Infrared Glass
Ultra Compact. Dimensions: 0.9″ (2.3cm), Weight 0.5 lbs (0.226 kg)