Anyone noticed...

...in all the scenes with Emmy Rossum, her male costar was always seated? That might've been due to Emmy being a tall girl. If you Google the actors' heights, you notice some of her male costars may be actually shorter than her. The heights of costars relative to one another are always an important thing in films, because they affect dialog scenes, camera setups, compositions, and all that sort of things. Whatever Emmy stars in, you can bet her entire cast or most of them is probably taller than average (e.g. her "Phantom of the Opera" costars). And vice versa for shorter actors. Same for any actor, actually. And that's why some actors never or rarely work with one another. It could be to a simple thing such as incompatible heights.