Just got it today. If the optical design is quite old, this lens is in a totally mechanical mount, available so far only for µ4/3. Here's the Arsat 50mm f/2.0 T/S no tilt nor shift but rotated 120° (4 click-stops) to show its tilt scale and worm drive. Same with full down tilt (8°) and right shift (11 mm). The lens is apparently the standard Kiev 35 mm SLR lens 50 mm f/2, normally in N(ikon) mount, directly attached to a tilt-shift block. The same unit has been used for many adaptations, usually of Kiev 66 lenses to 35 mm cameras. Here the lens is originally for 35 mm, and it amply covers the movements : +/- 8° tilt, and 11 mm shift (this in a single direction). The lens rotates freely--360° or more--with click-stops every 30°. Like with Nikon and Canon TS lenses, the lens is supplied with the movements crossed : you may shift left-right (or up-down) AND tilt up-down (or left-right), but you can't tilt left-right together with left-right shift. A usual annoyance. On the Arsat, unlike Canon and Nikon, this cannot be altered even in a workshop. On the other hand, the T/S aluminum block it's much more robustly built than either Canon or Nikon's T/S fiber-resin contraptions : you may take it in the field. Also, the Arsat shw no play or wobble in its movements. These are driven by two lazy-worm screw knobs, and have no lock. I found back the same positive command I had with old PC-Nikkor lenses (for shift only, of course). Same to pivot the lens : firmly grab and twist it against the rather heavy friction, with distinct click stops every 30°. Focusing is of course manual, revolving counterclockwise, i.e. Nikon-Pentax way. Good old-school mechanical feeling. It closes up to 0,5 m... theoretically : when focused at infinity, my lens scale reads not infinity but 4 mm to the right below the "1" in 10 m. So, questionable adjusting, but we'll see if it can help when slightly tilted... F stop adjusting goes from f/2 to 16, with half-click stops. Finally, filter size is a convenient 52 mm. I'll let you know of the practical results... if anyone cares.