Thank you guys for your comments.

i_my, I use Circular Polarizer in certain situations. I also use neutral density filters and graduated neutral density filters. The grad neutral density filters have the neutral density part on one half, and the other half is clear glass or resin. This helps balance a scene where the sky is really bright and below the horizon is dark. Neutral density filters essentially cut down the amount of light without affecting color. Graduated Neutral Density filters are a must if you take pictures of landscapes, especially during sunrise and sunset. They allow you to hold back the amount of light on bright sky and expose dark parts of the scene more, so that you get a photograph that is more balanced, rather than the foreground being properly exposed and the sky way over exposed. I hope this helps.

Thanks

- Suraj