I just saw that a new WA lens has been announced ( http://www.canonrumo...tal-slr-camera/ ) . I'm currently looking for a setup for my 5dmkIII. Having sold my ikelite setup, I'm starting fresh, and considering lenses and ports. Have initially been thinking about a Nauticam, and then buy the Canon 8-15 to use. However, this being a fullframe camera, that would go from circular crazy wide to wide. Unless your shooting whale sharks, Im thinking that might not be the ideal lens. I was in Coccos last year, and looking back at my shots and my gopro shots, extreamly few times did I wish for wider shots. More tele on the other hand...
I have already the Sigma 15FE and Canons 16-35 f/2.8 II, but I also read up that you need a very big dome to get good corner sharpnes, and preferly a 82mm +2 diopter. I'm using the 16-35 for other things (indoor concerts) so I'm not getting rid of it, but if this new lens, for a quite decent price, could outmatch the 2.8 version, and possible let me use a smaller dome, it would be something to consider.
Does anyone have a guess on what dome it would perform best in, and how small you possible could go? I'm doing all my diving traveling, and a dome take up very much space in the carry-on. And thinking of going with glas, does add quite a bit of weight.
Any feedback would be appreciated.