I have been meaning to watch this for a little while, though I haven't read the book yet. To be honest, I feel to give a 'review' of it kinda takes away from what I am going to say about this film.
It left me almost breathless, in a way that I have not felt in a long time (if I ever have at all). I felt every part of this film, the sorrow and the despair, and it touched me in a way I really did not expect. In short, I thought this film was amazing.