Dear friends recently I shoot some photographs of firework on the eve of Dassera on 17/10/10. Before this I never tried for such kind of firework. Though earlier I tried to capture some shots of rocket & other simple items on Diwali. I will like to share the settings & the reason for that with all of you. Lens: I opted for my wide angle lens Sigma 10-20mm f/4-5.6 EX DC HSM for Canon . Considering my 1st experience of such kind of shoot I didn't know how much area I have to cover without missing anything in the frame. This lens on my crop body canon 400D was wide enough to be on safer side. Shot 1: 18mm, f/18, ISO:100, 20sec, Sigma 10-20mm f/4-5.6 EX DC HSM for Canon,400D Aperture & DOF: I used the aperture from f/8 to f/18 tuning the required exposure along with different shutter speed. I started with f/18 & gradually shifted to f/8 keeping overexposed area at minimum. This range was enough to offer me good DOF keeping all elements in t...