Inon Lente Gran Angular UWL-S100 ZM80 M52

features

• The UWL-S100 ZM80 is specifically designed to get 100.0° view angle underwater when combined camera’s zoom position is set to 80mm (35mm film equivalent) for a user of a wide digital camera which is wider than 28mm (35mm film equivalent) or super zoom camera with long lens extension to enjoy wide underwater imaging with handy and compact system. (*4) 
• Dual use on land/underwater to work as an ultra wide converter underwater or fisheye converter on land(100.0° underwater/179.8°on land). Dedicated super dome option "Dome Lens Unit II for UWL-S100 ZM80" (coming soon)(*5) further increases its view angle underwater up to 149.8°.
• Threaded lens barrel (M52 P1.5) allows adjusting distance between this lens and camera master lens to accommodate with different master lenses among many compact digital cameras (*4).
• Unique optical design allows to shorten minimum focal distance (minimum focus distance 0cm) with ultra wide view angle thus effective for Wide Macro shot.
• The lens construction is 4 elements in 4 groups by optical glasses. Subject side lens surface is water-shedding magenta coating and inner lenses have multi coating to suppress reflection by lenses themselves to suppress chromatic aberration.

(*4) Compatible "Lens Adapter Base" and appropriate "Mount Converter" is necessary to attach this lens on a camera system. 

Specifications:

• Outer diameter / Length: (*2) 67.8mm / 66.4mm (2.7in / 2.6in)
• Weight (air / underwater): 296g / approx.145g (10.4oz / 5.1oz)
• Lens construction:  4 elements in 4 groups
• Focal length: (air / underwater) infinity / infinity (afocal system)
• Magnification: 0.23
• Maximum incident view angle: (air / underwater) (*3) 179.8° / 100°
• Body material / Finishing: Corrosion-resistant aluminum alloy / Rigid black almite
• Glass material / Finishing: Optical glass / Both side anti-reflection coating
• Mount thread diameter / pitch: M52 / 1.5
• Depth rating: 60m / 197ft