One thing about Ogre Cameras that is different from what you may expect is that you should only be using one Camera at a time (for now). That is, we do not create a Camera for viewing one portion of a scene, a second camera for viewing another portion of the scene and then enabling or disabling cameras based on what portion of the scene we want to display. Instead the way to accomplish this is to create SceneNodes which act as "camera holders". These SceneNodes simply sit in the scene and point at what the Camera might want to look at. When it is time to display a portion of the Scene, the Camera simply attaches itself to the appropriate SceneNode.