The IMAX sequences in NTTD were actually shot full 1.43:1
There are only three IMAX sequences in the film, however:
- opening Norway sequence
- opening Matera sequence
- Cuba sequence
They wanted to shoot more of the film in IMAX, but they could only get 2 IMAX cameras, because Nolan was 5...
The list posted earlier is from IMAX corporate, so it intentionally makes no distinction between actual full-sized IMAX screens and the "lie-max" screens they've licensed in AMC theaters, which I try to avoid.
I find this to be a better listing, because it gives the screen sizes and formats...