Hi All,
Thanks for the Tips you have given for taking the Night Photography.
I tried some in the New year night, but It was too foggy, so It didn't came that good. Also I am new to Bulb Mode(Currently I don't have Remote, need to get one ,I tried with Aperture mode to take the firework photos) and I have to explore that before I try some thing Like taking the Fireworks Photography.
Once again thanks for your inputs, Based on your inputs I will keep trying until I get something good :-).

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Cheers,
Sudhar