I have this lens, and I agree that it does take a while to focus when you start getting a little closer to the subject. I have found this to be a source of frustration in using this lens. Overall, I have appreciated the combination of quality and versatility that it offers (such a wide range of focal length!). I really like having a zoom feature to my lenses, though as opposed to having to switch lenses. I reaaaally hate switching lenses, so I guess it depends on how important that is to you. I'm willing to give up a little bit of quality if it means not having to switch a lens 5 times during an event!