When we got back from helping my dad staff the Pacific Northwest Herpetological Society's reptile booth at the Key Peninsula Community Fair, this lovely rainbow was waiting for us. It lasted long enough to get several decent shots, but this was one of the first. Mount Rainier is hidden behind the clouds near the center.
Auto program settings. Moderate tone curve to help contrast. Reduced to 640 width, then cropped from the bottom to 35mm aspect ratio. One application of USM at 88%; 0.6 dia; TH=5; JPEG=9/10.