As students of the cinema will readily appreciate, the difference, auteur-wise, between the Donner-directed Superman movies and the Lester-directed Superman movies is that Richard Donner gave a shit and Richard Lester clearly did not.
That’s why the flying scenes in Superman III are so disappointing. In the original movie, Donner was willing to spend untold months and millions perfecting the technology, while Lester figured you could just put a shot of Christopher Reeve holding his arms out on top of a picture of the landscape, problem solved.
But if you really want to see the full extent of Lester’s that’ll-do pragmatism, just look at the pathetic little patch of weeds that he chose as the location of the film’s picnic scene.