The Alaskan fall display actually is best seen the last week of August. This photo taken in Denali National Park is of the colorful tundra and taiga. I used a Nikon D 300 with a Nikkor Zoom lens and a Tiffen Circular Polarizer. The ISO was 100, F/16, 1/5th second exposure, at 200mm. The photo was taken with the camera mounted to a Gitzo Tripod and Arca-Swiss Head.