OkiMike

Any update on this?

Yeah, I'd second adding the WB function to your MyMenu page if you don't like to navigate the Menu each time.

As for the housing, as has been mentioned, some manufacturers DO allow access, and I imagine all would if even only by request. My Hugyfot, for example, offers buttons for all camera functions by default (with exception to DoF [unnecessary] and flash popup [also unnecessary since if you're using optically-syncing strobes, you'll have popped it up while installing the camera in the housing]).

You can never have enough light (though you can have it in the wrong place [e.g., all close to the lens]). I recommend at least a two-point source 21w bulbs or greater each.

Can I ask for what reason you are using a pony bottle? If for longer bottom times, perhaps double tanks are the solution. If for emergencies, perhaps a better dive plan to account for not running out of air unexpectedly.

I do not mean to derail the thread, but am wondering if a pony is really the best solution to your situation.

To resurrect an older thread, I have a 7D in a Hugyfot 7D housing with fisheye port (used with an EF-S 10-22mm IS USM lens) and use it with Halcyon Apollo 13.5 lighting (dual 50watt bulbs). Info on the lights can be found here: http://halcyon.net/lights/apollo

For stills, I've been shooting ambient light but am saving for some strobes, likely the Inon Z240s. Unless you're really into video (and moreso, video editing), I recommend getting some strobes first rather than video lights. Post-production on photos is a far easier and less time-consuming task than post-production video. And, as the saying goes, if it's easy and accessible, you'll use it a lot more and get your money's worth.

As for additional lenses, I've just purchased an EF 100mm f/2.8L IS, but will need to buy the Hugyfot port and port extension ring plus the aforementioned strobes before I can really put it to use underwater.

Best of luck to you!
Mike