Have you been to a real IMAX? They have massive screens that are sort of square-ish as shown on the right. As the article mentions, Nolan films parts of his mov

Have you been to a real IMAX? They have massive screens that are sort of square-ish as shown on the right. As the article mentions, Nolan films parts of his movies with this bigger aspect ratio. Most movies, when projected on IMAX, still only take up a small portion of the screen due to the aspect ratio. In a Nolan film, like the Dark Knight or Interstellar, during certain scenes the aspect ratio will open up so that you are viewing image on the entire multi-story screen. It is an amazing experience and really immerses you into the movie like nothing else; it takes up your entire visual field.