Description: I was actually taking a photograph of the Arc-Iris on the bridge. I snapped off the first photo with my Canon D20 with lenses 75-300mm, focal position 80mm. Seven seconds later, I went to 200mm, and took another photo. The auto focus didn't work correctly, and picture was blurry. So, I went back to 75mm, and took another photo. Finally, I changed lens and photographed normally. When I arrived back at the house, I saw what I had caught on film. In the first photo, a black and yellow object which looked like it had propulsion.