Fireworks

The constraint is capturing the trail, not the flash. A firework is a moving light, so a multi-second exposure draws its full arc across the frame. Mount a tripod, shoot manual at f/11 — small enough to keep the bright bursts from blowing out and to hold depth — and ISO 100 for a clean, dark sky. A two-to- four-second shutter catches a burst or two per frame; fire as a shell launches so its whole rise and bloom record.

Watch out for autofocus and overexposure. Focus cannot lock on a dark sky, so set manual focus to infinity early (on a distant light before the show) and leave it alone. And more bursts stacked in one long frame quickly turn the sky to smoke-lit grey — keep exposures on the shorter side and space your shots, rather than holding the shutter open through the whole finale.