According to the Sunday Herald, Alfonso Cuarón was the perfect director for Harry Potter and the Prisoner of Azkaban because he had a real understanding of the nuances of teenage life.
As far as Harry Potter goes, Cuarón liked the script, liked the book, liked Rowling’s storytelling and her “beautiful universe, which is emotionally and socially grounded”. He has said: “It is magical but it is not Duckland, you know, like where Donald Duck lives?”
In his own projects, Cuarón has tended to take his own magical view of the real world. With Harry Potter And The Prisoner Of Azkaban he seems to have introduced a real world beyond Rowling’s bubble, taking the production out of its pre-packed snowglobe environment at Leavesden studios to film in the open around Lochaber and Glenfinnan, and encouraging Radcliffe, Watson and mugging sidekick Rupert Grint, who now wear jeans and hoodies outside Hogwarts’s gates, to use their own hormones and teen blues for flavour.