Shutter Speed plays a vital role in Photography, you can do amazing and unbelievable things by adjusting the shutter speed.
See some of the slow shutter speed photos taken in Canon S160:
Don’t even think this is done with Photoshop, these images are taken directly from the camera with a shutter speed of 6 seconds.
Shutter Speed: 6 Seconds
ISO Speed: 1600
Flash: No Flash
You can see the photos are having too much grains because of ISO 1600, you can reduce this to take much more better photos.