Zen DP-230-NA: 230mm optically coated glass dome for Nauticam housings I bought this glass dome to use with a Nauticam Nikon D800 (full frame) housing. I ended up not using it, and it is brand new in the box, completely unused, with neoprene dome port cover. This is a huge piece of glass and provides the absolute best corner-to-corner sharpness of any dome out there. Full frame shooters rejoice! In keeping with the Zen Underwater tradition of excellence, we are proud to offer our fla