UK light cannon 100 as video light

I adapted a stingray housing to fit my Canon MVX430 DV camera, which worked pretty well, but it really needed a video light.

These excellent HID dive torches are available for around $300 posted on ebay from lightcannontoys

Here is a 5 min video from Cottage Reef showing the Light Cannon in action.

I'm now working on a magnet switch to operate the record button while underwater. At the moment I have to start recording before the dive and just let it run for 1 hr. Makes editing a pain.