We had some rather strange atmospheric conditions that let me capture a complete rainbow with an old truck serving as a point of interest, in fact, we could see a complete double rainbow (partially visible in this shot). More extensive coaxing is required and will have to wait until I get home tomorrow and get a shot at it with my proper editing suite....
Nikon D800 with Nikkor f/2.8 14-24mm lens shot at ISO 100, 1/8th second at f/8 at 14mm focal length.