I have a Canon 350D mounted on top of my head, and a Sony CX105 video camera mounted on the side.
The 350D is controlled by a tongue switch - it's a remote switch that goes in my mouth, and can be pressed by my tongue to take a photo. I usually take about 40 photos over the course of a jump (45 seconds or so).
The Sony CX105 is controlled by a button and LED setup - I press a button, mounted on my helmet, which turns the camera on and notifies me with a blue LED in front of my eye. Pressing the button again starts recording and lights a red LED. Pressing again stops recording.
So, just before exit, I manually turn my 350D on, and press the button (blue light comes on). As I'm climbing out, I press the button again (red light, recording starts). Once my canopy is open, I press the button (blue light, recording stops), and fly my canopy down to the ground. On the ground, I press and hold the button to turn my video camera off, and manually switch my stills off.
I normally shoot in Tv mode, but am now using Av.
Here's a still frame from the video shot by the guy just leaving the doorway of the plane in the previous pic (Tom Derbyshire):
|IMAGE IS A REDIRECT OR MISSING!|
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Hope that explains it!