"Take nothing but pictures, leave nothing but footprints, kill nothing but time"
Long-Exposure or Slow-Shutter Photography involves using a long-duration shutter speed to sharply capture the stationary elements of images while blurring, smearing, or obscuring the moving elements. Long-Exposure Photography captures one element that conventional photography does not: TIME. The paths of bright moving objects become clearly visible. Clouds form broad streaks or bands in the sky, head and tail lights of Cars become bright coloured streaks. Fallen leaves floating in flowing water will leave lovely coloured streaks and swirls when they get trapped in swirling pools. Stars form trails in the sky and Water smooths over to give a milky appearance. Only bright objects will form visible trails, however, dark objects usually disappear. Boats leave bright trails from their lights at night but become invisible by day.