Thanks for the information JMR and Matt. My question was not meant to focus on gear per se, or detract from the fine images posted by JMR. I asked because, like JMR, I own a Pentax (K3) and have used some non-digital age lenses, including one Nikon 105 macro with adapter, a 100-300 Pentax zoom electronic (but older), and I find the images rather soft and lacking in contrast. Even against cheap kit zoom lenses. Like JMR, I am considering moving to full frame and maybe even medium format Pentax. I think the value for what you get is unbeatable, especially the weather proofing and sturdy build of the Pentax DSLR cameras. Perhaps I have bad lenses, since so many Pentax users state they have good results with older manual lenses. Anyway, thank for the feedback. Back to the images!
JR