This was a night time artillery demonstration conducted by a Civil War reenactment group at Fresno, California. A total of 12 cannon's fired one after another and I used a long exposure to capture the blast of each. It was a spectacular demonstration of firepower and the sound was unbelievable!
D300, f/16, 18 seconds, ISO 100, Nikkor 17-55mm f/2.8 @ 26mm, tripod, cable release (bulb), raw, conversion in capture NX2; Photomatix (created 3 tiff's at -2ev, 0ev, +2ev; tone compressor)