Christopher Nolan doesn’t do small movies — if he’s going to mount a war picture, you can bet it’s gonna be one of the biggest (and priciest!) to date. He’s seemingly spared no expense for his new film Dunkirk, reportedly corralling thousands of extras, destroying vintage planes, and dominating the land, sea, and air all for a grand new vision of combat. And in order to fully convey the enormity of his ambitions, Nolan went all-in and mounted his production on 70 millimeter film. For laymen, that means he used a larger film strip while shooting to capture more brilliant colors, richer sound, and a greater sharpness of detail. For those who don’t give a hoot, it means this film will rattle your bones.