I used this flat port with Sea & Sea housings and Nauticam housings. It works fine and the front element (I think it's acrylic, but websites say that this is glass) is in mint condition, with no scratches. I did remove the thick rubber front insulation from the front of the port. It caused fogging when I used my housings in cold water. You can glue the thing back on if you want, but my recommendation would be to leave it off.
The port presently has a bayonet mount to fit Nauticam housings. The original mount to fit Sea & Sea housings is included, so you can use this port on Nauticam or Sea & Sea housings. If you buy this port, I can switch the mount to either Sea & Sea or Nauticam, or you can do it yourself.
This port is for Sea & Sea users who want to use this on Sea and Sea housings with the lenses below. If you are a Nauticam user, it is a port that you can experiment with, to use with various macro lenses by itself and with extension rings. s-l1600 (1).jpg 42.18KB 7 downloads s-l1600.jpg 60.87KB 7 downloads
The port retails for $290 and the Nauticam bayonet mount retails for $30.
The Sea & Sea NX Standard Flat Port can be used with the Nikon Ai AF Micro-Nikkor 60mm F2.8D, Nikon Ai AF Micro-Nikkor 105mm F2.8D, Nikon AF-S VR Micro-Nikkor ED 105mm F2.8G (IF), Cannon EF50mm F2.5 Compact Macro, and Sigma AF 90mm Macro C F2.8EN Lenses. The Port is made from ABS resin and tempered glass, measures (Dia. x D) 5.3" x 3.9" (132mm x 98mm), weighs approximately 21oz (600g) and is depth rated to 330' (100 meters). The distance between the mount and the inner glass surface is 3.3" (84mm). Some of the above lenses may require a port extension to use with this port.
I will send this via USPS Priority Mail at buyer's expense (likely about $6.55).
Please contact Norb Wu at temp2_at_norbertwu.com. Please no phone calls.