Replying to Making Videos Widescreen To Make Them Look More Cinematic-- Help

So here is a little test I created once I learned how to make videos widescreen. But that is not my question. MY Question is Is there a way on your camera to make it easier so that you wont mess up the wide screen. For example all of the shots were in frame above in a regular project but once I made it wide screen some of the shots are out of frame just a little. I was wondering is there anyway that you can make your camera show close to this crop when shooting so I can effectively use widescreen to better enhance my editing.

Camera Setup Panasonic GH2 1080p 30p aspect ratio 16:9

pw to video is skiing

Any help whats so ever would be appreciated. (the test video is a test video so dont critique i was just trying to show how some of my shots are out of frame)