My camera is a 18.0 megapixel Canon 7D digital SLR. I wavered for a long time between this and the full-frame 5D, but eventually opted for the 7D because of its built-in flash; this allows me to connect my strobes with optical fibre cables instead of electrical connectors. That, of course, was before LED flash triggers…
My lenses are a Sigma 17-70mm f/2.8-4 DC Macro OS HSM for wide-angle and a Canon EF 100mm f/2.8 for macro work.
The housing is a Nauticam NA-7D, which I find wonderfully ergonomic. Thanks to internal levers and gears, you have most of the camera’s controls truly at your fingertips.
As for lens ports, I have chosen Nauticam’s 8.5″ Fisheye port for the Sigma and the Macro port 87 for the Canon lens.