A test shot taken at the photo dealers using my Sigma 18-250mm lens, see EXIF data. My Nikon D5000 mounted on tripod, the self-timer, on 10 seconds, was used to isolate possible camera movement. One of three shots, all using different lenses. Central focus point used on lower edge of camera on sheet of paper, observe areas of sharp text is only BEHIND the focus distance with this lens.