Harry Potter and the Prisoner of Azkaban is where the Harry Potter franchise was finally infused with some visual flair, and it needed it. Without Alfonso Cuaron the franchise would not be where it is today.
I love all of the movies in the Harry Potter franchise, and I enjoy this movie, but I think this is the one film where the complications of the story didn’t translate quite the same to the screen. While the first two films in the series left the most out from the books, the third story is one of the more complex and hard to translate. Half-Blood Prince may have been difficult because so much is told in flashback, but Prisoner of Azkaban has the unique issue of showing the last act twice because Harry and Hermione go back in time to stop events from happening. It’s challenging to show your audience almost identical events in the same film and while it comes across on screen it’s much more intriguing in the book.
Harry: Professor, why do the dementors affect me so? More than anyone else, I mean?
Professor Lupin: Listen, dementors are among the foulest creatures to walk this earth. They feed on every good feeling, every happy memory until a person is left with nothing but his worst experiences. The dementors affect you more than others because there are true horrors in your past, horrors your classmates can scarcely imagine. You are not weak, Harry. You have nothing to be ashamed of.