Location.
Choose a location whereby whether you want to frame the fireworks with some background or with some foreground. You can recce the location, take few pictures of the location. Visualize it in your mind how high the fireworks will go. Will this composition works,etc ?
Camera
Depends on the camera used. For DSLR, it will be easier. For consumer based camera (E.g Canon A95,etc). check that if you are able to choose Aperture & Shutter Speed and I take using Bulb mode.
Aperture/Shutter
My choice of aperture range from F8 - F22 and shutter speed about 1-11 seconds. There no fixed and hard rule to which aperture and shutter. You got to experiment it and also depend on the intensity of the fireworks and how many burst you wish to include by means of using black card.
Wind direction
You can take in consideration this factor as you know fireworks generate alot of smoke and when the it blown toward your direction. You can simply just watch the fireworks and forget abt shooting ...:sweatsm:
Composition
Some pple like to frame it horizontally, some like vertically. it depends much of your liking. Make sure your horizion is straight by doing a long exposure and check if your horizion is tilted.
Tripod
Tripod is a must as it will prevent blurness when you go for long exposure. You don't wish to see your fireworks being fuzzy... :sweat:
Pre-focus
Switch off your auto focus and switch to manual focus. Focus to infinity or you can pre-focus using auto focus and switch to manual focus. You don't want your focus to move front and forth and miss alot of opportunity and also being out of focus as there nothing to focus on when fireworks came on.
During shoot
Be early to get yourself a good location. Setup your tripod, bring some insect repellant, water and some portable chair if you want to sit.
Be careful of kids, inconsiderate fella who come into your line of view...
When the fireworks goes off, if your composition is off, try to realign and shoot accordingly. Avoid being ambitious, like zooming in and out to shoot the firework trying to shoot close up. Stay in your framing....
Background too dark ?
I used to have this problem. It much depend on the location you choose. Usually what I do is that, I exposed the scene before the fireworks start (maybe about 5 mins before it start). This exposure serve as my background exposure when I do DI in photoshop. When fireworks started, I shoot as per normal ..
Post Processing
With the background exposure, I put it together with fireworks layer and select Lighten/Screen. Adjust opacity to taste. Increase Hue/Saturation and adjust levels to taste.
Hope these helps~...
Keep shooting~~