Some people would take issue with calling Star Trek a "real IMAX" movie, due to the film format it was filmed in not being true IMAX film. (Most studio films that are shown in IMAX were not filmed in IMAX - most science-museum-documentary IMAX movies were filmed on the giant IMAX film). The difference is subtle.

I am not one of these people, but I know of them. Giant movies are giant.