I got the same disappointing results as Stormtech, but I was using a genuine Pentax adapter. With longer lenses, on tripod with remote or 12s timer and VF3, results varied from OK to atrocious (softness, fringing, CA). Of the shorter lenses I tried without tripod, none looked very good, Handling and ergonomics were horrible. I exchanged the Pentax adapter for an 06 lens. A few days later I ordered an inexpensive RJ adapter with aperture ring and tripod mount. I haven't received it yet.
I would also mention that I looked at many Q to K photos posted, before and after I tried for myself. Many of the photos looked bad, and many that looked very bad to me received praise, so clearly not all of us have the same standards.
Last edited by audiobomber; 05-09-2013 at 10:53 AM.