Ninja alert

This guy was part of a game that thrilled 130 kids to no end at a karate summer camp. Us parents who stood ringside had a good laugh too, as the children fought down the scary, but for the occasion ever so slightly stupid ninjas.
For the first time in my life I have used a monopod, and was quite surprised how useful it can be. This shot was obtained at 1/40s, at a focal length of 220mm. Had you asked me one day earlier, I would have said I'd need a tripod for that. :-)
Camera: Pentax K20D,
Lens: Pentax DA* 60-250/4