Shadowblade wrote in post #16372737
No more unrealistic than attaching a tiny 5D2 or D800 body to a supertelephoto mounted on a tripod.
You mount the body to the lens, not the other way around.
This is wrong. A super telephoto (even most telephotos) have a tripod collar, allowing the heavy lens to bear the load of both lens and camera. A tilt shift or heavy Zeiss lens has no tripod collar, so when attaching to a tripod, the camera has to carry the load of the lens. So, no, it's not the same as using a supertelephoto on a (relatively) tiny DSLR.
The structural concern may well be a non-issue, and I hope it isn't. But Lloyd Chambers writes in his blog about using Canon and Nikon lenses on NEX cameras:
"Large and heavy lenses like the Otus 55/1.4 APO-Distagon should not be used with an adapter without supporting the lens somehow (e.g. with a hand under it). Lens mounts experience a lever-arm torque which can ultimately bend the lens mount, a very expensive repair. Not to mention “sag” while shooting."
Naturally you can use your hand to support the lens for hand-held shooting, but how do you support the lens for tripod shooting?