Twilight Question, Book and Movie?

Seeing the movie clips actually didn't change my personal images that I thought/wanted them to look like. I was of course suprised to see the characters for the movie because I thought they looked very different from the ones I had imagined. But I have gotten used to them and think they will make a great movie. Strangely when I went back to finishing the series I never thought about the movie characters the old ones that I imagined still played in my head. I think when I read books I make up my own character and when I see the movie or show later it doesn't affect me. But if I see the movie first like (the series of unfortunate events) and then I decide to read the series that's when the movie affects me. I think it's because the movie was the first impression you had of the characters and that you can't think of anything else to fit the part except for them so that's when that happens to me. =] I hope it makes some sense...lol