A late report on a film that's been out a while but I saw The Great Gatsby at a cinema in north London on Saturday evening. The crowd was mixed and the cinema was 90% full. I was with two other people.About 20 minutes into the screening 2 older couples walked out and didn't return. I'm guessing they didn't take to the Baz interpretation of a classic book. They had a 'we've had enough of this, thank you' look on their faces as they left.I've read the book and enjoyed the film hugely but I can understand why some fans of the book might be turned off. The spectacle and soundtrack that I liked so much could easily be jarring for those looking for a more faithful adaptation.What did not work for me, however, was the tone of the film and therefore Gatsby himself. Slapstick comedy/melodrama/morality tale/love story - the film couldn't decide what it wanted to be.One of my companions liked it, the other thought it was 'sh!t'. However we all agreed Leo is a 'true movie star'. He did a great job with an unevenly written role. And I had forgotten how well he plays romantic hero. His longing for Daisy in several scenes was a sight to behold.As for Carey Mulligan - the guy who thought the film was shite also charmingly declared her as looking 'like a piglet'! I can't go that far but much as I like her as an actress, I think she did not look the part at all. And that's important in this film because it is so much about the look. She doesn't have the delicate beauty needed for this iconic role and she looked out of place. I was reminded of Katherine Hepburn being turned down for Gone with the wind 'because Rhett Butler wouldn't wait 10 years for you'.I couldn't buy that Gatsby would do all that for Carey.Otherwise I thought the casting worked.