Birdman is most famous for the fact it is shown as one whole continuous long shot, although it is shown like this it isn’t all shot at once as there is some camera trickery, but even then it is a masterpiece because its the first of its kind. through the film there are lots of difficult long take shots, a lot of these scenes have many people doing complicated things and so the directer needed to be very organised so that everything ran smoothly without mistakes and people bumping into each other and messing up the scene, these shots most likely weren’t first try so it could become very frustrating for the actors and people working on the scene.