Another question for Bob (or anyone). Will something like the Rollei XACT2 Bellows system (or any of these larger systems) work with Nikkor lenses? Will the image circles be large enough? Any ideas?
Sorry that I would answer it instead of Bob, but laws of (lens) physics are universal (luckily enough)...
a) Looks up the image circles of your lens in question for infinity (for instance on my macrolenses site...)
b) The image circle at 1:1 is twice that size - assuming you'd like to use it for macro
c) Your FF camera sensor needs about 43mm image diameter to be fully covered
d) Compare them and you'll see how much shift you can safely do (leave a bit safety room)...
Example, the Apo ELO Nikkor 105mm has 80mm image diameter at f5.6 and 100mm at f8 so there should be quite some shift possible.