Does reading a book thats been turned into a movie spoil it for u?

Hello Guardianwings Yes, many times. I love the book better more descriptive than the movie. I also do not like when producers changes the ending of the story to get more people to watch. Sometime the poeple they pick for teh characters are not what is described in the book or I have hard time with personality of actors or actress because I seen them other movies like: they cannot play this part. I wish the producers sticks to plot and details of the book. Thanks and have a great day Sincerely unique16