Continuous video auto-focus demoed on the HTC HD7

Windows Phone 7 has a unique feature not present on the iPhone or most Android handsets.  The video recorder features continuous auto-focus during the recording, whereas most other devices feature touch focussing, meaning the handset needs to be handled during the recording process, and essentially taking it from a one-handed to two-handed affair.

The above example video by Coolsmartphone shows the trick in action, with video recorded by the HTC HD7,  and it is clear the process would be a lot more clunky without.