Quite a few books have been made into movies. There are different views on how these movies will turn out. Some people think the movie will be precisely like the book, others think it’ll be completely different, and there are also people who don’t even know the book exists.
I don’t think I’ve ever seen a movie that was an exact duplication of the book. It’s pretty much impossible I’d say. Why is it impossible? Because they are different types of media.
Comparing book vs. movie is like experiencing something in person as opposed to seeing a picture. A book takes place in your imagination. ANYTHING is possible. A movie takes place in a studio or on a set somewhere and everything that’s possible can only go as far as everyone’s physical abilities. Naturally, it’s hard to get a movie up to imagination standards.