Lens Construction: 4 elements, 4 groups (3G1P)
Compatible Camera (Up To) Sensor Size: 7.6 x 5.7 mm (1/1.7")
Field of View Conversion: 24mm (84.1 deg) to 10mm (130 deg)
Dome Lens: Optical grade polycarbonate
Lens Barrel: Aluminum w/ type II anodizing
Max Magnification: x4.2 (Area Ratio x17.64) with 105mm F2.8 macro lens
Glass/Coating: Optical glass/multi layer BBAR coating
Mounting Thread: M37 x PO.75 (Includes ring to M52)
Dimensions: ~77.7x53.5mm
Weight (air): 226g
Weight (water): 128g
Depth Rating: 197ft (80m)