I haven't used this lens since I bought it. It's been sitting at home all the time. If anyone's interested, I'm willing to sell it. There aren't a single scratch or damage of any kind on the lens. The lens is perfect. It's just missing the box. It's in like-new condition. I can take additional photos, or take photos directly from the camera. I have a Nikon D90. I think £140 is a very reasonable price.
eBay