The great thing about Stephen is that he sees the movie as a separate thing, I think. He wants it to capture the essence of the book, and if he feels that's been done, then he's not too particular about the details. I think that's why he's happy.
“Very few people possess true artistic ability. It is therefore both unseemly and unproductive to irritate the situation by making an effort. If you have a burning, restless urge to write or paint, simply eat something sweet and the feeling will pass.”