I was looking forward to seeing two bright young actors appearing in "Dear John," but it was very slow moving; and I felt that both the screenplay and the direction hampered the flexibility of the principle performers. I usually do enjoy film adaptations of these novels. Ironically, I did think the movie did an excellent job of depicting realistic military action.
The cinematography was very good at segueing through love letters, focusing just enough on a key word or phrase in each letter. I felt that Channing Tatum became bogged down in what became a very "hang-dog" series of expressions in response to loss.