David Biederbeck shows how to get a bit of control with the After Effects 3D camera by using expressions to create a target that the camera will automatically focus on.

…a quick little tutorial on how to create a target object in After effects to make sure your camera is always in focus…

Even with the two node Camera and the addition of the unified camera tool in After Effects, it is still problematic at times when trying to create smooth and natural camera motion, so adding some control for motion and focus with expressions in After Effects is always a good idea.