I always travel with a spare body too. As many have said, being able to topside photograph with the same body/lens combinations is really useful. And if the dreaded flood arrives you do at least have some options. Sure, you have probably written off one lens, but you do at least have a second body and, likely, other lenses.
And, again, as others have said, you also have a backup if a camera body develops a fault or you drop it.....
Camera bodies aren't cheap but spread over several years and compared to the cost of dive photography trips.......
Many thanks! I spotted on another forum that folks have been using the Tokina 10-17 with the D800 set on the DX crop. I hadn't thought of that. Doh. And I've got a TC 1.4 too.... so some things to try out first.
..... thanks for the Sigma 15mm tip. I'll take a look at that.
But a DP-FE2 won't fit directly on a Type 3 mount on the ND800? Will it fit with a 20mm (or less) extension ring? How about a Type 4 mount and the adaptor to fit Type 3 ports?
... and then problems with focussing rings. Man, nothing is ever simple eh?!?!
I thought one advantage of a switch to the ND800 would be using fibre optic links to Inon Z240s and then the ability to TTL (for macro). But I'm just waiting for someone to say "ahh, yes, it's not that simple......."
I've just got back from the Maldives (Chaaya Reef). I'm a Tokina 10-17 user too for WA. I did find though the sharks hovering around that part of the Maldives couldn't be shot with a 10-17m. I just couldn't get close enough.
I'd agree that it depends where you are as to whether a 10-17 is suitable. It sure works in Mark and Steve's terrific pics!