Here are a couple shots from earlier...The first is with your camera and lens and the second is with our D40 basic model

Your camera

Our Camera
Your camera

Our Camera
Your Camera

Our Camera
Maybe it's operator error on my part but I can't see a big difference between the pics with your camera and ours to justify the price of the lens?
Maybe play around with it a bit more... You might figure something out and then you can show us how to really use our camera
