LONG EXPOSURE PHOTOGRAPHY
Long exposure photography, also known as time exposure or slow-shutter photography, uses a long duration of shutter speed to capture stationary aspects of a scene sharply, while blurring or smearing the moving aspects. It differs from conventional photographic practices as it captures an image over an extended period of time, instead of in a single snapshot.
Photographing moving water, such as a waterfall or stream, using long exposure creates a mist-like effect around the water, blurring together its movement while the rest of the scenery retains its sharpness.
Night photography often uses long exposure to capture star trails or other celestial objects. Light from other sources such as street lamps or headlights can also cause interesting effects in a shot that’s being taken using long exposure. Light painting is another technique that uses long exposure and a mobile light source, such as a flashlight or sparkler, to create a unique “painting” with the strokes of light.