When I was reading my book, I noticed one big thing that I thought was really strange between the book and the film: Calpurnia.  In the book, Calpurnia is shown to be a pretty big character.  There are whole chapters all about her.  At one point in the book, she takes Scout and Jem with her to church.  You learn a lot about her in this chapter, and so do Scout and Jem.  She also has a lot to do with taking care of them in place of their mother, and even though she is strict, Scout and Jem both learn to love her.  However, in the film, Calpurnia is not a very big character.  In fact, she is a pretty small character.  She has little to do with the storyline.  I just found this to be weird because it was so different.
 
I just finished watching my movie.  The movie was a lot like the novel: there were only minor differences.  However, the movie left out a couple of scenes, such as when Calpurnia took Jem and Scout to church with her.  Also, it left out the scene where the house in the neighborhood burned down.  However, there weren't too many differences.  My director did a good job of turning the novel into the movie, given how many other directors gave up on it.