Originally posted by house 15mm is *very* wide for shift. In my experience you get away with less wide lenses because shift allows for more efficient use of fov. Would be interesting to see if anyone takes real architecture photographs with such a wide lens. I know canon has a very wide one but not this wide right?
I think Canon has a 17mm, Nikon 19mm tilt-shift. 15 is very wide on FF but for APC only a little bit wider than a 24mm on FF.
So IMO could be very interesting if you shoot both formats. A comparison with Rokinon/Samyang 24 T/S that of course shows narrower width also would be interesting. I don‘t know if there are other Shift or Tilt-Sift lenses for K-Mount availlable new. I‘d not count Pentax 28 Shift by example.