I can't imagine how a K-01 could contribute to the softness. If you look at Photozone, the 16mp cameras have significantly more resolution than the 10mp bodies. I wonder if you're comparing at equal resolution? What I mean is, if you crop to pixel level, you are cropping much harder on the 16mp image. What looks sharp at 10mp may not maintain sharpness at 16mp. To level the playing field, you need to print to the same size, or view at the same resolution on the monitor.
I was researching this yesterday, the K-01 seems like an ideal camera for digiscoping. What lens are you using on the camera? I'm trying to sort out what a K-01 with DA 40mm + spotting scope would look like versus a K-01 with DA*300 with 1.5 and 2X TC's, versus a Q with DA*300 and K-mount adapter. The advantages of the Q would be size and fast aperture. The big advantage for me with the K-01, DA*300 and TC's is no added cost, I already own the gear.
I'm having trouble understanding digiscoping. For example, for the Pentax PF-80 ED, they spec aperture as 80mm, and magnification depends on the eyepiece. With a K-01 and 40mm f/2.8, what is the final aperture? What sort of equivalent focal length would you end up with? I can calculate these things readily for the other extreme tele options:
- K-01 with DA*300, 1.5X and 2X TC = 1350mm (FF equivalent) @ f/12
- Q with DA*300 = 1650mm @ f4