I have watched Blow-Up twice now, and their is no denying that its main storyline, having to do with the murder, is eerie and suspensful. In fact, its probably what I most like about the film. Its just that some of the peripheral scenes depicting Swinging London don't always work, and can seem indulgent and distracting. Especially the one where Thomas rolls around on the studio floor with the two girls. The scene where Redgraves character comes to visit him is also a bore. So my evaluation is that its a good film, that could have been even better.