This photo was taken just to the right of Lower Yosemite Falls near the bridge shooting directly into the rainbow. I used a Nikon D 7100 with a Hoya Circular Polarier attached to the Nikkor Zoom Lens (18-200 mm.). The ISO was 100, F/18, and 1/25th second exposure, with the camera mounted to a Gitzo Tripod with Arca-Swiss Head. I was impressed with the mysterious quality of the light as a result of the rainbow.