I couldn't agree more forestG. Cooldude, I believe you'd be amazed with it's versatility, I love it's close focusing abilities.
And here's a good excuse to post this pic:-). I just got the K20D and wanted to see both how well you can crop with this sensor and, in this photo, how well it handles ISO400. So the DA* 300/4 and Spike both jumped up to the plate.
K20D, DA*300/4,
f4, 1/500sec, ISO400, cropped to what Lightroom calls 1:1. Pretty sure it's a 100% crop if I understand this right, I call it 100%.
Shot on a tripod, but it's hard to catch Spike not moving, real hard:-).