Originally posted by Digitalis they are using the kit DA18-55mm lens - which is optically substandard when compared to the DA55mm f/1.4. If you really want to see the difference between the K5 and K5IIs you should at least use a decent lens, most people who have switched from K5 to K5IIs are using high end glass.
Yep. The critical eye will deduce the difference, and high end glass will maximize it. When I picked up a DA* 60-250, I figured I could take advantage of the IIs. I am waiting for it to come back from Pentax service but in the meantime, I see more detail with my Pentax 17-70 and 43 prime than I did with my K5, which I loved. I also wanted better auto focus and the IIs works like a charm.