I was intrigued by the chiaroscuro effects early morning at the Mesquite Flat Dunes at Death Valley National Park. I used a Nikon D 7100 and a Nikkor Zoom lens (18-200 mm.), with a Hoya Circular Polarizer, all attached to a Gitzo Tripod and Arca-Swiss Head. The ISO was 200, F/18, 1/15th second exp[osure, and a Focal Length of 200 mm.