Continuing yesterday’s list of tips on photographing fireworks . . .
Fourth, think carefully about depth of field. If you’re shooting wide and trying to get the landscape into the photo at all, you’ll want to stop down the aperture as much as possible.
Fifth, as a contrary point to the above, be aware that because the fireworks are so bright, you aren’t going to be able to get a single exposure for both the fireworks and the landscape unless the landscape is brightly lit (like the city lights). Some photographers solve this by combining two photos manually later. Be aware the HDR settings will not be very helpful (although may be interesting) because of the motion of the fireworks. To combine the two manual exposures, you would need to be able to layer them together in an application like Photoshop.
Sixth, fireworks move. To get long, bright streaks of light in the sky, you need a fairly long shutter speed. This helps with the fourth tip–you get more depth of field as a bonus. I’m pretty happy with the size, shape, length of the streaks I get at about .4 seconds. However, there are some types of fireworks that look better with longer exposures. The only downside of exposing longer is that you get more smoke showing up in the process.
Seventh, I once missed about ½ of a fireworks show trying this trick, but maybe it will work better for you. Supposedly, you can put your camera on bulb and use a piece of paper or your hand to cover the lens in between the rockets being fired. Then, you can get multiple fireworks into one shot. This might have worked last night when I was in very close proximity to the launch point. However, from a further distance, I just got very dull looking fireworks that were often barely visible.