This is a still from The Dark Knight. It's from the intro sequence and it introduces 'The Joker'. The shot focuses on one of the robbers, and is blank aside from the colour of the thieves' clothing and masks. The character and in the background, as well as the actual background is blurred, as the scene (at that point) is focusing on this particular character. The gun being pointed at the central character. The character behind him is wearing a purple suit, in the head of the moment, you may not realise that the masked person in the background is 'The Joker', and actually involved with the bank robbery (contrary to the other robbers' beliefs)