I am using a D300 in an Ikelite housing. I use the Nikon 12-24, like it other than it is a little soft on the edges. I have not tried it with a diopter or in the bigger 8 inch Ikelite port. I also use a Tokina 100mm macro which I enjoy.
There is a lot of discussion about what a lense should do to make it work well under water. Good glass of course, but also close focusing ( what ever close is). But I also get the sense that a lense that both zooms and focuses internally is advantageous especially if it is behind a dome port.
Primarily I am looking for a lense maybe 35 and 70 or 80 mm.
Am I looking for the right thing and what specific lenses should I look at. I only get to shoot 1-2 trips per year so not a lot of time to just play with the gear.
Thanks I learn a lot in this forum keep up the good work.
Mike