when I right click on a model and select follow, the camera track the model but not fast enough. I am tracking a quadcopter, the quadcopter always leaves the screen and the camera follows very slowly, and it changes the viewing angle. 1- is there a way to make it follow faster? 2- is there a hay to fix the viewing angle?

I am using Gazebo 7.9

I am aware of http://answers.gazebosim.org/question/8437/how-to-make-the-camera-track-a-moving-robot/ and http://answers.gazebosim.org/question/6713/change-zoom-level-of-follow-mode/

Thanks