Hahaha, not a Canon 1DmkIII?? :bsmilie:
Im Nikon User leh.. switch to Canon siong leh

The best camera should be able to,
1. Withstand flooding
2. use minimal Battery
3. super fast focusing
4. Super fast Low Light Focusing
5. Smart White Balance that will adjust itself when it detects its underwater, and change the tone accordingly to the depth, maybe camera with depth sensor
6. have very powerful flash, or allow wireless flash that can be mounted on the arms of your submarine.
7. 12mp will be more then enf
8. Write in Raw
9. Choice of superwide n fisheye to macro lenses, interchangable underwater
10. built in photoshop and still use minimal power
11. netural when underwater, with auto bouyancy control
12. very cheap

13. look good
14. easy to pack
15. zero shutter lag
16. can surf net
17. built in coffee maker
18. HBO
19. Chick Magnet
20. Auto GPS Tracking, allowing you to track it if u drop it inside the water
21. Anti thief lock out alarm
22. Radar for manta+whaleshark+mola
23. Sonar Scanner for nudibranches
24. built in rebreather
*phew, thats my ideal best camera in the world