This dual-use (land/underwater) wide conversion lens is specially designed for particular wide cameras having a master lens wider than 28mm (35mm film equivalent) or a super zoom with a longer extension. You can get ultra-wide underwater imaging with an approx. 80mm focal length (35mm film equivalent) setting on the camera, not as like a standard wide conversion lens.
The maximum view angle is 100° underwater for wide imaging and 179.8° on land for fish-eye imaging.
Unique optical design allows the shortening of the minimum focal distance with an ultra-wide view angle, making it effective for wide macro shots.
The lens construction is 4 elements in 4 groups by optical glasses. The subject side lens surface is water-shedding magenta coating, and inner lenses have multi-coating to suppress reflection by the lenses themselves to suppress chromatic aberration.
The optional "Dome Lens Unit II for UWL-S100 ZM80" further increases the maximum view angle to 149.8° underwater for semi-fisheye imaging.
The UWL-S100 ZM80 is attached to a compatible camera housing via a combination of a "Lens Adapter Base" exclusively designed for each housing and an appropriate "Mount Converter."
The lens barrel has a threaded wall that allows you to adjust the lens position back and forth to accommodate different master lenses in many compact digital cameras.
(*1) Optional "M52-M67 Mount Converter for UWL-S100 ZM80" is necessary.
(*2) Optional "M52-LD Mount Converter for UWL-S100 ZM80" is necessary.
