I just ran across another movie Nikon in The Deep End of the Ocean, a soaper about a missing child. The mother, played here by Michelle Pfieffer, is a professional photographer (has a nice looking darkroom and stuff), and uses a square format thing that looks kind of like a Mamiya with a prism for studio work, and 35's for field work, and she's shown with what looks like a Nikon F5. The movie supposedly spans a nine year period starting in the 1980's, but I can't recall whether the F5 occurs anachronistically or not, and the movie, on VHS not DVD, was not good enough to bother watching a second time.
I should add that, of course, in the usual movie manner, the Nikon, whatever it was, makes the motor drive sound of an F. There is, also, at least one bit of realism here, in that in the critical scene where she is using the Nikon and a telephoto lens to identify the boy who turns out to be her lost kid, she runs out of film at at about the right time.