This photo was taken at the Pinnacles Viewpoint in Badlands national Park just before a massive electrical storm cleared the area of photographers. I used
a Nikon D 7100, Nikkor Zoom Lens (18-200 mm.), and a .9 Soft Lee Graduated Neutral Density Filter. The ISO was 200, F/18, 1/40th second exposure, and a Focal Length of 95 mm. I used a Gitzo Tripod and Arca-Swiss Head.