Alright, took it to the park and managed to deplete my partially charged battery, but not before getting some shots in.
DA* 50-135 f/2.8 w/ Vivitar 2X Macro Focusing TC. I think I'm going to use this combo more often, a sharp 100-270mm f/5.6 with unique closeup abilities.
The DA 40 XS is an absolute rock-star on this camera.
A 20 f/2.8 @ f/8
Mallards with Sigma 400mm f/5.6 APO Tele Macro
Squirrel with Sigma 400mm f/5.6 APO Tele Macro
Lots of feather detail with 36MP on your side. Sigma 400mm f/5.6 APO Tele Macro.
I could not trust my K-5 to AF accurately wide open with this lens, but the K-1 nails it on this chipmunk. Sigma 400mm f/5.6 APO Tele Macro.
F 28mm f/2.8
One more before bed! Pentax-A 50 f/1.7 wide open - dangled my arms over the railing and used focus peaking in live view with the articulating screen to get this angle.