Hi, I used my Nikon 14mm / 2.8 today with Nikon D4 + Subal ND4 housing with EXR-20/4 extension tube and DP-FE4 dome. The conditions were not ideal (no ambient light) and some backscatter. With f3.2 it is soft from the corners, I did not try other f-stops to find how it would behave. This was my first dive with the lens in this setup and I will carry on experimenting in the future dives.
Male
