I was working on arturs camera example a while ago, converted the whole camera thing to an object which makes tracking objects easier. Also I wanted to add a basic zooming to it but failed. The problem is when I scale the container object the coordinates stay the same while the Width x Height of the container changes so a new calculation needed there to center the cam on target obj.
I failed on the 2nd part, maybe if anyone wants to give a hand, we can finish this and put it to giderostutorials site.
Credits go to Arturs for the camera code, I just changed how it handles the object tracking.