This is a photo of an approaching storm over Bow Lake in Banff National Park in Canada, with an eerie light on the mountains and reflection. I used a Nikon D7100, Nikkor Zoom lens (18-200 mm.), with a Hoya Circular Polarizer. The ISO was 100 F/16 1/16th second exposure Focal Length 32 mm. I used a Gitzo Tripod and Arca-Swiss Head.