- Operation is really easy. There is no automation of any kind - aperture is fully manual, so is focus and of course so are tilt and rotation. My K-5 in HyperP mode keeps the shutter speed at no slower than 1/60 sec after which it starts upping the ISO. No issues with metering.
- Focusing is tricky because one cannot focus by the center and recompose. If there is a tilt involved, one has to compose first and only then focus carefully. Fortunately K-5 has sufficiently good focusing screen while maximum aperture of f/4.0 helps as well. It would seem that my K-5's focusing screen is slightly out of alignment for precision manual focusing though.
- This lens has huge front element and although it is marked MC, it does catch flare, but that is to be expected. Other than that it is sharp with very pleasing OOF rendering and good color rendering as well.
All in all, given the lack of native tilt solutions in Pentax land, this one looks like a really good way to get started. More tilted shots to come along...