Following the success of the mighty 70mm celluloid in Oppenheimer and Dune Part Two, IMAX CEO confirms that Joker 2 (“Joker: Folie à Deux”) will also be screened in 70mm theaters. However, it was shot digitally on the ARRI ALEXA 65.
Source: IMAX CEO: “Joker 2 Will be Screened in IMAX 70mm” – Y.M.Cinema Magazine