I shoot fireworks (pyrotechnician), and also shoot fireworks (photography). Because of some of my contacts, I can sometimes get an alert about a unique fireworks shoot. Some of my stuff:
http://www.thecalderwoods.org/pyro.htm
Disney pyro is sprinkled in with my other DLR shoots:
http://www.thecalderwoods.org/disney.htm
I also started this site early last year:
http://www.pyrotography.com
The advice here on this thread is good. I also did a page many years ago to show folks how I do it:
http://www.thecalderwoods.org/tom/digital_pyro_photography.htm
(It is kind of old - needs to be updated)
For smoke, you can *try* to get rid of smoke in post, or get yourself positioned well so the wind works *for* you. Or just deal with the smoke. You can try to increase the black point in Photoshop (or Lightroom), but that usually has undesireable effects.
Personally, I try to capture the full color of the stars (the burning colored part of the fireworks) - too may times the photo is exposed so the star is a white streak with a color halo. I go more for the entire star to have color. (Harder than you think...)
I also try to catch some *very* unique shots, knowing something about the chemistry of fireworks. On the shot below, I knew I needed a dry, moonless, slightly windy night for this to work (to minimize smoke). I placed the camera so that I cold get the Mickey, the castle and the statue, and yeah, I set up on that spot around 6:30 p.m. The Mickey in the sky is done with gold glitter which is burning charcoal saturated with potassium nitrate. Charcoal burns at a fairly low temperature, and I usually expose that at f/9. At aperture, it took a 4.5 second exposure to see good colors on the castle. My wife was to my left, my son around about 15' along the plants on the right, both with flash units in hand set for a manual 1/1 test shot. They were shooting from each side of the statue and pointed almost right at each other. I wanted the reflection of the flash, not the illumination since people on the other side would also be lit up. When the pyro went off, I started exposing and yelled "NOW!" and they both fired. I chimped the shot, and:
(Gallery here:
http://www.thecalderwoods.org/tom/DLand-071027a/index.html)
It took a while to figure out this shot, and even longer to wait for the right conditions (least of which was that I would be able to get in to even shap it!). I think it took almost a year between concept thought and execution.
Oh, and a side effect of this shot is that line of blue dots along the bottom of the shot. I couldn't figure it out, until I just blew out the picture to see what it was - it's small point-n-shoot cameras, small vid cams and cell phones being held up trying to catch the fireworks. ;
