The costume the actors wear and if they're in stylized makeup and wigs in a live-action movie let's say, in a big costume drama, even though it does give them a sense of great ambience and environment and they kind of feel like they're in a great court, or if they feel like they're in the old west, or if they feel like they're being chased by hobbits or dinosaurs, it all comes down to the actors looking each other in the eye.