I took the D7000 for it's first underwater excursion yesterday and I must say it was very easy to use. Stills was no different than the D300. Switching to video was easy - switch mode from M to A, turn on liveview, focus and start video. I used a VR lens (which you can hear most of the time) and I can only imagine how shaky it will be if I use my 60mm f/2.8D.
The footage is noting earth shattering but I'm pleased with a first effort.
Stills are still my thing but being able to shoot video will be fun. I realise now that I'll have to get a proper video light if I want to get serious.
[vimeo]33458790[/vimeo]
Note I also had my GoPro mounted on the rig. During the dive I got buzzed by a large school of 60cm+ yellow-tail kingfish. In the excitement, I completely failed to get any footage - even though they were rushing around me for over a minute.