I have in the past dragged around a DSLR and a Video Cam with two housings, two sets of lights, cables, batteries, chargers, etc. I am getting to old for this and am thinking about replacing this with one system that does both. I currently have the Canon EOS 1Ds MII, Subal housing, Ikelite strobes, Sony HD Cam, Light and Motion housing, LED lights, blah, blah. I have a number of good Canon lenses so it would seem the logical step would be to go with the Canon EOS 1D-X, EOS 5D Mark III but the new Nikons obviously have better resolution. If I went Nikon then I have the issue of using Canon lenses on a Nikon camera back, eg., D810. Is there any good advice here for the best direction to take?