During the movie when Ash is being chased by the evil dead cloud (first person camera shot) through the woods after he crashes his car and is running inside, he runs in the entrance. Then he is running towards an open door in which the room behind looks dark and narrow, but when he closes the door and the camera breaks through the room is super bright and the ceiling is missing. As he is running through the rest of the cabin the ceiling is missing in many sections for camera/lighting equipment.