I had owned a 120 Makro CFi lens for quite a while which I used with a P-25. I really loved it except at infinity it was not as good. I don't think they are optimized for distance, but great in the studio.(as someone else said) I have rented the 120 HC a number of times, I think it is one of the few or only AF macro lenses, it also focused very close much closer then the CF without tubes. It seemed to be quite good, but I only used it for closer subjects.