How can I disable camera orbiting / Frame Aim?

lukon100

I'm making a virtual tour of a house, by means of a set of camaras. In most cases, I want the cameras to pan, but not to orbit anything, such that when the user uses the orbit widget cube, it just makes the camera pan. It would be like setting the Frame Aim to nothing.

Apparently, as I generate new cameras based on copying the default camera, the new cameras inherit the Frame Aim of the default camera, making them orbit. But I want no Frame Aim at all.