Thanks. You will be surprised I spent 12 hours a day most of the days when I am not out, on the internet, looking at photos. The biggest problem with web photos is one cannot tell how much of PP was done. I spent most of my time at FM, alternate section, because that's where most of almost every type of lenses are being discussed and most, I hope it's true, do very little PP on their photos. Generally, I still find photos shot with such lenses, the old OM, Nikkor, Zeiss, Leica on the old 5D/40D giving the best rendition that I like. The key distinct difference in the photos above is the the 3Dness of the one shot with the OM/5D. The FA31/K5 photos are very flat. Before I decided on the K5, I looked at Canon's 60D and 7D and they happen to be the same as K5, unlike the feel I had with the old Canon 40D/5D. The 60D/7D phtos are very flat also. Maybe this has something to do with pixel density and thus size. Higher resolution, better DR but the lost on the presence (3D) feel. Incidentally, I also looked at the D7000, and it has the same feel. Am I going crazy?
This 3D thing isn't really quantifiable though.
A lot of the Pentaxforums people like to call it the "slide-like" feel. Incidentally, Velvia isn't known for high DR or moderate saturation...