Do these things even exist? I have a d40x and I don't mind most of the limitations, I was just curious if there was a decent 50mm prime lens that will auto-focus with the d40/d40x? I like my zoom lenses (18-55 kit lens, 55-200) but I feel like they almost make me lazy. After shooting a film camera with a prime lens I found I moved around a lot more and my pictures came out a lot more interesting and dynamic. I'm also attracted to the significantly wider aperatures on these lenses so I can hand-hold my camera a little more often. The kit lens is kind of a joke in that regard.