THIS IS *NOT* AN ENDORSEMENT BY THE U.S. ARMY I'm demonstrating the weather sealing and dust resistance offered by PENTAX's bodies and lenses (www.pentaximaging.com and www.pentaxforums.com) top offerings while deployed in Afghanistan by covering them in sand, small rocks, and dust, and then rinsing them off in the shower. PENTAX K-7 + DA* 50-135 f/2.8 PENTAX K-5 + D-BG4 Battery Grip + DA* 16-50 f/2.8 Video recorded with the PENTAX WG-2 @ 640x30p. For those that are curious regarding pricing, as of 8 July 2012, the PENTAX K-7 can be had for $450 used (as it is discontinued), the PENTAX K-5 for $800, the DA* 16-50 for $850, the DA* 50-135 for $850, and the Battery grip for $185. No Nikon or Canon offerings are as affordable for a fully weather sealed system with professional grade quality. Also, the PENTAX kit will be much smaller and more compact.