Instead of manually manipulating the camera, you can make animating much easier by using the Walkthrough Assistant. The Walkthrough Assistant allows you to “fly” your camera to explore your virtual designs. Although the tool's name implies interior usage, the Walkthrough Assistant is actually suitable for both interior and exterior scenes.
In essence, it simplifies the tasks of creating a camera, constraining that camera to a path of your choice, and then makes it easy to edit and animate various aspects of the camera such as tilt, pan and lens values. All manipulation is centralized in the same dialog so you do not have to browse through various panels to make changes to camera parameters.
Time to complete: 1+ hours (includes rendering time to create an animation.)