Thanks to Costco Photo Center, without the advertising, and some additonal information.
- Turn the camera’s flash off. If you are including people in a shot you can try the Night Portrait flash setting, but otherwise, shut if off.
- Turn off Autofocus. Autofocus will probably have difficulty finding the right focal point for fireworks.
- Set the camera to Manual and the f/stop to the largest possible aperture (lowest aperture number). Remember with f/stop, the smaller the number the bigger the aperture.
- Set the shutter speed to 1/60th of a second. It’s a good place to start but be sure to experiment with slower speeds like 1/30 & 1/15 (this will probably require a tripod).
