This photo was taken at the foot of Latourell Falls in the Columbia Gorge in Oregon. I used a Nikon D 7100 with a Nikkor Zoom lens, with a Hoya Circular Ploarizer attached to a Gitzo Tripod and Arca-Swiss Head. The ISO was 100, F/16, 1 second exposure (to slow the flow of the water), and a Focal Length
of 200 mm.