If you mean converting all parameters such as iso, f-stop, etc, then there is no way.
If you mean replacing all camera positions in the scene, there is no way (maybe some 3ds Max tool can be used, like clone and align).
If you mean replacing a single camera's position, you can use the Corona toolbar for this to place a Corona Camera in the active view.
Points 1 and 2 are actually interesting, so I will log it as a feature request.