Hello, I have a problem with this lens and I wanted to see if anyone else has had similar problems with any of their lenses. On the print I will have a central area of about 2.5" in diameter that is of slightly higher density on the film and unsharp compared to the rest of the film. If all movements are centered then this area is circular and in the center of the film. If movements are used then it is off center accordingly and eliptical. It is not a distinct area but just annoyingly fuzzier and lighter in the print. I might be able to attach an example tonight if that would help to explain my description. Thanks.