A friend sent me this nice reference for fireworks shots. Just thought I would share.... http://www.nyip.com/tips/current/firewksintro.php
To get pics of people lighting fireworks (with an SLR and off camera flash): put your camera on a tripod, with a cable release compose so that you'll get all the fireworks going off that you want, but leave room for the pyromaniac too; set the focus, and turn off AF set the aperture to the correct f/stop for your flash and distance to subject (the person) set the shutter to bulb as the person is bending down to light the firework, trip the shutter and hold it open when the fuse lights have the person stand up, back off, but turn and face the camera flash them using your flash (held in your hand) with the tester button (doesn't even have to be attached to the camera) before the firework goes off then they should run away continue holding open the shutter until you get enough of the fireworks exploding, then release bulb if you flash them lighting the firework, it looks like they got fried in the photo if you have to be far away to get all of the firework exploding, have an assistant flash your subject from close up
