Did you know? You can see one camera from another. Add a second camera and try it!

Make sure Render > Cameras is set to Always or else the cameras will be invisible.

Use the Scene > Add > Pose > Camera. The new camera will appear in the Scene graph under the selected nodes. A ray coming out of the camera shows the relationship between your cursor and the 3D world.

In 3D View, select the new Camera. The view will now draw from the new point of view.

Move one camera until it is pointing at the other camera.