Mark there are many cameras out there and most new ones are very decent, 1080P HD resolution is now common in either 30fps or 60fps.
These three listed below are the most common in use on motorcycles.
Some swear by the GoPro Hero model, it gets good reviews, but I find its bulky for mounting on the side of a helmet and basically it looks like a traditional digital camera in a clear case on a pivot mount. This is definitely not aerodynamic at all for high speeds hanging off the side of your helmet, but its functional.
Approx $370.00
http://gopro.com/products/?gclid=CJHz49 ... 5QodXhmhIQ" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;
Contour have their updated version now with GPS and its very well designed. These are first class units and Contours service and support is first rate.
For an 'all in one' sleek alloy cased unit, this is the best for mounting close to the side of your helmet with one touch button on and off recording, however it does suffer from some audio issues at speed with wind noise.
Approx $420.00
http://contour.com/" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;
The V.I.O POV HD model camera is the most expensive of these three, with its wired remote screen monitor/playback adapter, this is something the previous two do not have.
Its a nice touch to have the ability to actually watch what the camera sees as its recording etc, not that you can look at it for too long while riding anyways.
Virtually a two piece unit, the camera head is a bit smaller than the Contour, but it has to be hard wired by cable
to the adapter unit so you have to use the combo.
A nice touch is the wireless remote control, large 32GB capacity and quality fittings etc, but it comes all at a price.
Approx $600.00
http://www.vio-pov.com/products-all/pov-hd.html" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;
I do not recommend you mount a camera on a handlebar since any vibrations are sent directly to the camera, this often results in nauseating visual playback effects.
Its therefore best to mount the camera close to the side of your helmet so the viewer sees a normal riders view. Plus this way you can control the recording easily with one finger, BUT you need to remember to keep your head movements as fluid as possible when recording.
You usually have a brief moment to start and stop a recording once under motion, so make sure the camera you choose can accomplish this action as easily as possible.
So which one would you choose??