DIVERGENT delivers where so many of the recent young adult novel film adaptations have failed. I saw this film not having read the book and on its own it stands very well.
First off the bad:
1) action sequences feel slow and not natural. You can tell that the actors were not particularly familiar with hand to hand combat, not to say their characters weren't supposed to be but even when they're supposed to know how to fight it feels lackluster. 2) obvious age difference between the two main characters. 3) high school Clich feel for the first half of the film.
Now with that said ^ here is what Worked:
1) length. Often we see film adaptations of novels try and cram everything into 90 or 100 mins but Divergent takes its time. Normally this would be a drawback but the film makes good use of the extra time (the film is 145 mins) to really progress. 2) the performances of the main characters are solid. Nothing amazing but the dynamic between the two main characters works well. - the visual style of the film is very good. The dystopian city of Chicago is very well realized. 3) brings to light moral and societal problems. Suprizingly deep for a young adult film.
OVERALL divergent is a good film. It fails in few places but succeeds in most that count. With the failure of young adult movies such as Percy Jackson, Divergent healthily separates itself from them. I would recommend seeing it. There WILL be a sequel.