new over unders

I've added some of my over/unders to my flickr site. I've become obssessed with them http://www.flickr.com/photos/vazuw

Really nice; I think the B&W pics are great, and the clouds really add some drama to the scene.

Awesome shots, the B&W are really cool. I haven't had a chance to get out with my new rig yet but im working on getting out this sunday. I have taken it into the pool and played around with it, but i was hoping you could give me some tips on how to shoot an over/under shot. What lens are you using and at what f stop, and where do you set your focal point. I didn't really try to work with it much in the pool because it was freezing, haha, but when i tried an over under shot, it turned out extremly out of focus. Any suggestions?

thanks guys. All were taken with aquatica 8" dome with 10.5. I expose and focus lock on the above subject. I use fill flash for below, sometimes one sometimes two. Its about as awkward as you can get.

Wow, the obsession is paying off - those are terrific. I love the b+w shots as well, very powerful.