Since last Summer, I have been using this lens for many subjects, mostly wildlife, both handheld and on a tripod. There has been a lot of discussion on this site about this lens and it's use for wildlife and action photography. This is an update of the information covered in the following threads... http://www.photo.net/nikon-camera-forum/00QjA6 This is meant for those who are trying to decide if purchasing this lens is a wise decision. There is also an excellent, balanced review of this lens by Thom Hogan here... http://bythom.com/80400VRlens.htm Most photographers who are interested in this lens are looking for a telephoto zoom that will allow enough reach to get them into bird or wildlife photography without breaking the bank. The price is reasonable at about $1500 for a high quality, well built Nikkor lens. Compare this to about $5000 for the Nikkor 200-400 mm AF-S VR Zoom, or about $8000 for the 500 mm f4 VR prime. There are some third party alternatives(such as the new 120-400 from Sigma), but these have some drawbacks, although they are less expensive. So, if you are interested, it is fair to know the downsides of this lens. First, and most important, this is not an AF-S lens. That means that it does not have an internal focusing motor and therefore relies on the motor in the camera for autofocus. If your camera does not have an internal motor(like the D40 and D60) this lens will not autofocus on your camera. However, the lens does have a "work-around" in the form of a focus limiting switch, that allows you to select the full range of focus(7.5 feet to infinity) or limit it to about 13.5 feet to infinity. By using the limiting switch, you limit the travel of the screw drive and increase the speed of the autofocus. Also, if you have an idea where your subject will be, you can pre-focus on something at that distance. Then, the lens has a short travel distance to acquire focus and is actually quite quick. Second, since this lens' aperture ranges from f4.5-5.6, it is not a very fast lens. This will limit it's use in low light such as early mornings and dusk, when some of the best light for wildlife photography exists. Still, it is a very usable lens for good light and even for motion under the right circumstances. I believe that it still represents a reasonable choice for those who can get close to their subjects or are shooting large wildlife from a distance. It is really sharp stopped down to f8 and pulled back some from 400 mm as the following shot demonstrates. I should also mention that it is not intended for use with teleconverters. This information is provided to assist those who may be starting their search for a lens like this one, so as not to have to repeat the hours of research that I did before I decided to buy it.