I have a Zen DP-100mm (4-inches in diameter) optical glass dome is design to provide both wide angle and close-focus wide-angle photography specifically for the Tokina Fisheye 10-17mm F3.5-4.5 DX zoom. Remove the 11mm spacer between the glass dome port and the housing mount, the DP-100 then becomes a working port for Nikon’s DX AF Fisheye-Nikkor 10.5mm f/2.8G ED lens.
Condition: The port is been used only a couple dives and is just as you see it in the pictures, glass is clean no scratches.
Selling price: $700 US, which covers shipping anywhere in the US. Contact me about shipping outside of the US.