Four elements, 17 mm lens with automatic focus and automatic diaphragm, ranges between f/3 and f/12, with a vertical viewing angle of 140 and a horizontal viewing angle of 180, with built-in lens shade and internal color correction.


Our eyes.




Technical Subjects:

The family of angles in underwater photography
News in image composition


gone but not forgotten!

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This RingSurf Underwater Photo Ring Site
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technical subjects, pertaining photography & diving technique