Hi Dave -
Not sure if there is a little confusion here?
In Canon parlance, when people refer to "tilt-shift" lenses on DSLR's (such as the Canon TS-E range):
Tilt = tilt and swing
Shift = shift and rise/fall
For shift:
On a view camera, you typically have the ability to independently shift horizontally and rise/fall vertically. On the TS-E's, you can shift only along one axis, but crucially you can rotate the lens to set that axis at any angle you choose.
Here's an example of a diagonal shift on the 17mm TS-E:
For tilt/swing:
On a view camera, again, have the ability to independently set the amount of tilt on one axis, and swing on the other. Similar to the above, with "tilt" on the TS-E's, you can set the amount of tilt that you want, and then rotate the axis around which that tilt occurs. For example, if you set what would be referred to as a left/right swing in a view camera on a TS-E, you can then rotate the tilt part of the lens through 90 degrees so that the swing then becomes an up-down tilt in view camera parlance.
Here's an example of tilt being used on the 45mm TS-E:
With the older TS-E's (24mm Mk I, 45mm and 90mm), the axes of the tilt and shift portions of the lenses are fixed perpendicular to one another. You can combine a left/right shift with an up/down tilt, or an up/down rise & fall with a left/right swing (and then rotate the entire lens assembly), but no other combination (note that some people do choose to physically disassemble and reassemble the lens in order to be able to combine shift with swing).
With the newer Canon TS-E's (17mm and 24mm Mk II), it is possible to independently set the rotational axis of both the tilt and shift elements of the lens, effectively giving you an equivalent freedom as you would have by using movements on the front standard of a view camera.
Regards,
Gerald.
/edit.
Ahah. Knew I had one knocking around somewhere. Here's an image using both "tilt" (swing) and "shift" (rise):
A technical camera is a subset of this, you can rise/fall to frame, then with a tilt/Shift movement on the lens board, you t/s.
with a DSLR and a fixed lens, your only option is focus stacking. If you have A t/s lens, you can get the t/s part of a technical camera, but not the rise/fall.
Dave