Unfortunatly, that is a camera angle thing. The objects will not be masked separately because Carrara 'sees' the plane as an object. You have to have a horizon line in the view which will terminiate the plane. The results are a mask that shows the top of your objects that protrude above the horizon line. Everything else will be black below and white above. That goes on my Carrara wish list; A mask feature that ignores the plane but shows only the objects above the intersection of it. Mark