Nauticam N85 140mm Optical Glass Fisheye Dome Port + Mini Extension Ring 17mm (Used)

A Nauticam N85-mount 140mm optical glass fisheye dome port, purpose-built for the Olympus 8mm f/1.8 Fisheye PRO lens setup. Optical glass domes hold their clarity for the life of the port, so a well-cared-for used unit performs identically to new.

Comes complete with the 17mm mini extension ring needed for correct lens-to-port spacing, plus the neoprene dome cover, carrying pouch, and rear port caps for both the dome and the extension ring — everything you need to protect the glass between dives.

Condition report: Working condition 10/10, aesthetic condition 7.5/10 (light cosmetic wear, no impact on optics or sealing). Add the Olympus 8mm f/1.8 PRO lens as an option below if you don't already own one.