Tamron SP 300mm F2.8 60B & Pentax *istD at lake Zurich

Hi Pentaxians, I mounted the Tamron SP 300mm F2.8 on the, tiny in comparison, Pentax *istD and on the Swiss monostat monopod for a walk at lake Zurich and the first photos since I got this lens. --> http://www.adaptall-2.com/lenses/60B.html <-- I did not use the Tamron 1.4 converter this time to make it a 420mm F4 lens, that will have to wait until my muscles grow a bit larger ;-) 2 kilos for a lens does not sound that much but add the camera and the monopod and a bag with other lenses and small stuff and I was pretty tired after walking alongside lake Zurich this afternoon. for 2 hours. I would have to exercise quite a bit to hand-held this lens if ever but the combination with the monostat works very well and I don't even need a ballhead because the lens can be changed in orientation by loosening a screw. I'm pretty impressed so far with my samples (in harsh light) at infinity and at around 10 meters and while they are not that interesting I hope you would not have preferred scientific brickwall shots instead :-)