Fourth of July 2012, Fireworks Show, La Sierra Park, Riverside CA; Pat Mahoney Crew Chief. Used to Canon cameras (40D & 50D) simultaneously during the shoot. My two sons Jeremy and Ben were working on the crew setting up the show and Ben was one of four hand-firing the mortars on the ground. Andrew was at his own show in Palm Springs with his own crew. The 50D was set on a tripod and a 10-24 mm lens set at 10 mm, F8 to F16, ISO 100, bulb setting with a shutter release cable. Most exposures were at about 5 seconds or more. The 40D was also on a tripod with an 18-55 mm 2.8 lens at F 8 to 16, ISO 200. I used a shutter release cable on both cameras and shoot the images. None of the images have been post processed. These are right off the flashcard.