ZEN DP-170-N85II Optical Glass Dome Port for Nauticam N85 V2

The 170mm size is travel friendly yet maintains the Zen tradition for the finest optical ports available. This multi-coated port offers optical purity, free from chromatic aberation, flare and distortion yielding stunning photographic results. The interior of the dome element is coated with a magnesium fluoride broadband anti-reflective coating to minimize internal reflections from camera lenses, lettering on cameras, etc. which can be problematic when shooting over/under scenes. The exterior is treated with a proprietary scratch resistant coating to control lens flare. This coating yields an amazing 99.7%+ transmissive value for true distortion free images.