Though the Harry Potter franchise worked hard to bring the spirit of the original books to screen, some aspects inevitably had to change.
She sort of had an overbite, so [Emma’s] wearing fake teeth in that scene,” he continued.
“And I realized that she’s never going to be able to perform with these huge fake teeth in her mouth for the rest of the movie.
Columbus also revealed an entire book character which had to be cut from the film for practical purposes: the troublesome Hogwarts poltergeist Peeves, which is actually the director’s favourite character from the Philosopher’s Stone.