Hi, I have just recently switched to a DSLR Nikon D100. I have taken some photos but i find that my photos are using a very low shutter speed for pictures. Can any experts give me some comments on the pictures i have taken? My gallery is at www.pbase.com/willdon/donald. the range of my shutter speed is around 1/6 secs to 1/15 secs at iso 1000 for night shots.