This is a NIB lens, never used. It has a 52mm threaded mount. The lens provides a FOV of approximately 160+ degrees depending upon the camera and housing port specifics. This lens was $400 new and is current manufacture product. Includes the original box, neoprene dome cover and rear cap. Asking $225.00 or offer considered.
Suitable for Olympus TG, various Canon P&S and similar small sensor cameras with 28mm native lens.
James
