Taken over the weekend. Had some film to burn and opened the shutter and left the camera alone for about an hour. Near the end the first firework went off and I quickly closed the shutter.
Jeff, typically I will open the lens to f/5.6 for a long night exposure. During long daytime exposures using a Neutral Density Filter I may go anywhere between f/5.6 to f/22 or greater depending on the lens I am using at the time.