In your example, one object contains the other because they are both located at (0,0,0). If you want to have it different, translate them to where you want them to be.
If you want them to be rendered in two different canvas', i suggest to use two different worlds instead. You may do it in one world by adjusting the camera to the cube respectively the sphere, but that makes no sense unless they should interact with each other, being rendered together in one frame or similar.