U.S. Army soldier Alex Jansen is currently stationed in Afghanistan, and besides taking some great shots and posting them up on the Pentax forums, he also put together this video illustrating one of the reasons Pentax owners love their cameras: the dust and weather sealing.
He starts by heaping piles of sand on both his K-7 and K-5 to demonstrate their resistance to dust, and then, to show off the weather sealing, he rinses them off under running water in the shower.
(via: Petapixel)