Tilt-shift, is it the wrong term?
Tilt is rotating the camera on a horizontal axis, so pointing the lens up or down.
Shift is when the lens moves in order to shift the image circle on the film or sensor.
"Many such images are described as employing "tilt-shift", but the term is something of a misnomer because shift is seldom involved and is usually unrelated to the effect produced. The term may derive from the tilt-shift lens normally required when the effect is produced optically."
-from wikipedia
a) Keeping the camera level, with an ordinary lens, captures only the bottom portion of the building.
(b) Tilting the camera upwards results in vertical perspective.
c) Shifting the lens upwards results in a picture of the entire subject.
View camera tilt-shift
Side View
Example of what a tilt-shift lens looks like for slrs
So the answer is, I think, yes, unless you're talking about the lens itself.
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