I examined two of the 11-16 lenses, one new in the store, and one used but in perfect condition. They both focused ok on the camera, both autofocus and manually on the focus screen, but they both had huge errors on their focus scales. When focused at a few feet, the scale would read infinity. Not just close, or within the usual extra narrow focusing scales range of wide angle lenses, but just fo far off the real distances that I was put off buying either one. Both of them had this exactly the same gross error of focus scales not matching the actual focus distance. If they can't get the focus scale to read at least close, so you can't set the distance manually by the scale, that calls into question their entire quality control process.