I got my developed slide back from the lab and something weird happened to it. The film seems "correctly" exposed, but with lower contrast and with a green tint. The edge of the film, that was supposed to be completely black, is a dark green. The shadows of the image don't have detail and are not black either. They also have the green tint. The entire film is not in the same 'greenish' level. The first part has more evident tint. Some frames are unevenly green; the top and bottom of the image have more tint and the center has less. There are some frames that are the opposite: They are visibly MAGENTA. The "magenta" frames are between "green" frames. Finally the question: What the hell happened with my film? Is this lab's fault? The film was expired but I already used film expired this much before with no problems. The film is a Multi Speed film that was supposed to be used in the 100-1000 ISO range. I used it at ISO 400 and informed the lab. Well, this never happened before and I used to trust this lab but I don't know anymore. I hope someone can enlighten me.