K3 Lens reommendation.

Very good point, I had forgotten about this. There has been some discussion on Forums and youtube about the JPEG NR settings on the K-3. The general concensus is to switch it off or turn it to 'Low' to prevent any loss of sharpness on JPEGs due to in-camera NR. For me it's not an issue as I shoot in RAW and JPEG, but it could certainly play a part in the images you've posted in this thread being less sharp than you would like them to be.

BTW, lack of sharpness has not been an issue with my K-3.

Regards
David