Here us a link to a simulator that helped me understand a bit better how the tilt focusing works:
http://static.timparkin.co.uk/static/dslr-tilt-shift

Moving the focus slider to the right means focusing closer, moving it to the left means focusing towards infinity

You will see that at usual tripod heights you need very little tilt to get hinge point of the plane of focus on the ground under your camera.

It is from this article:
http://www.onlandscape.co.uk/2011/04...ction-to-tilt/




Arnt