A tilt&shift lens that you can pay. It's very well built, but fully manual - both focus and aperture. It does the job both of correcting perspecive, creating large DOF when tilting the focal plane and doing fake miniatures when tilting the opposite way.
This was my cheap way into the tilt&shift world of fake miniatures and perspective control.
2,8/80mm S&T-Lens
Photex
Nikon
Yes
Telephoto
FX
Both
80
