I'm not sure if anyone's posted something similar before but I've been playing around with controlling DSLR's using my iPhone and a remote desktop app today.

iPhone remote for Canon DSLR video | Paul Joy (http://www.pauljoy.com/workflow/iphone-remote-for-dslr-video/)

Quite fiddly, but it's possible to control recording, focus, and camera setting etc in situations where you can't go near the camera.

Canon EOS video control by iPhone on Vimeo

Thanks Paul that is a good one. Guess it works with a 5d also.

Nice that it also enables focus during recording. I'm now wishing that my iPhone was the size of a brick like my very first mobile phone and had a huge touch screen to match! :)

get an ipad

I'll ask O2 to give me a free upgrade on my iphone. I just need to buy trousers with bigger pockets now to fit it in...Just like I used to wear when I first bought a mobile phone. :)