What to know: 70mm? IMAX? Dolby? Christopher Nolan breaks down his favorite big screen formats

Christopher Nolan has been dreaming of IMAX since he was a kid. The Oscar-winning filmmaker behind “Oppenheimer,” “Inception,” and the “Dark Knight” Batman films had a formative experience seeing nature documentaries at the Museum of Science and Industry in Chicago and always wondered what it would be like to make a major Hollywood movie in that way.