Tilt / Shift "Plunger" Lens

For you DYI guys out there. (HT Art)

DigiHack - Digital Photography projects: Tilt-Shift PC Lens: "Here is another fairly easy hack that if you like it, and use it, can save you goo-gobs of money. Build your own tilt-shift lens. I know there are people out there who would love to experiment with a PC Shift lens, but the cost of purchasing one is generally prohibitive unless you plan to shoot professionally with the lens. (A nikon shift lens with tilt functions cost over $1000, BTW: The Nikon guys once took a look over this and said, 'why would you do that to such a nice camera? We sell that lens you know.' I know. That's the point)."