These are images of a bookcase taken using this perspective control lens on a Pentax *ist-D SLR, both in the normal position and with full shift. An unshifted image with perspective corrected in Photoshop Elements 3 is included for comparison.

The bookcase was about 6 feet from the camera, and both images were aligned so that the bottom of the frame was the same and level with the camera.

I've added an image of the lens on my *ist-D to give an idea of its size.