This afternoon as Julie and I were driving home from St. Louis we saw this Sundog. We have seen them before but not very often. They are quite common but the conditions that create them where they become visible to you from your location at a particular time are not that common.
Sundogs are formed by plate-shaped hexagonal ice crystals in high and cold cirrus clouds. These crystals act as prisms, bending the light rays passing through them by 22°. As the crystals sink through the air they become vertically aligned, so sunlight is refracted horizontally — this is when, sundogs are seen. (Source Wikipedia)
Nikon D40x with Nikon 300mm VR lens, hand held – As Is.