It have backfocus when use on my previous Fujifilm S2 pro cam.Sold it after two months.No problem with the new owner.My advice is to test the lens with your camera before purchase.
i got a very good copy from a fellow clubsnapper. pretty much happy with it. just remember to test the lens for problems in the store. try at both ends, the widest aperture should give a reasonably sharp image, esp f4.5 @ 70mm