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Yeah, it was delayed to early November, and Japan is supposed to get the first release. How did you get one?
More specifically, would you feel comfortable using the autofocus to take pictures of people, or animals moving towards, or away from you while walking at a fast pace in poor light? I'm guessing that the firmware update and the fact that this is not a macro lens has indeed improved the autofocus, but that taking pictures of my kids running around just won't work with large apertures in low light.
your signature is very funny.The pre-focus does that is fast, and it can take pitures of moving kids indoor at normale light situations. At low light I don't know, but I think that it will work.