Random images to finish off my stint with the SMC Pentax-M 100mm 1:2.8, a very well-built lens with a lightweight body. I have also used the lens previously on the analog Pentax MZ-7, and now on the digital Pen E-P5.
With an equivalent of a 200mm lens on a 35mm full-frame camera, the SMC Pentax-M 100mm 1:2.8 is about the longest focal length I was able to shoot with the camera handheld.