This photo was shot in Mormon Row in Grand Teton National Park in Wyoming. The sun was mainly obscured by clouds and then for a brief moment I was able to capture the fall-colored cottonwoods backlit when it peeked from behind the cloud cover. The lighting effect lasted only for a few seconds. I used a Nikon D 7100 with a Nikkor Zoom Lens (18-200 mm.) and a Gitzo Tripod and Arca-Swiss Head with a Hoya Circular Polarizer. The ISO was 400, F/16, and a 1/40th second exposure.