Long-exposure photography

45-minute exposure taken on a dark and clear night in Cerro Paranal, the stars leave trails in their apparent motion around the Celestial South Pole (left).

A long exposure photo of a watch in the dark. Note the appearance of the second hand as it rotates, showing that this was a 30-second exposure. The hour hand (which has only moved barely) is clear, while the minute hand is slightly blurry from a half a minute of movement.

A 30-second-long exposure sharply captured the still elements of this image while blurring the waterfall into a mist-like appearance. Debris in the swirling water in the pool forms complete circles.

Long-exposure photography or time-exposure photography 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 bands, head and tail lights of cars become bright streaks, stars form trails in the sky and water smooths over. Only bright objects will form visible trails, however, dark objects usually disappear. Boats during daytime long exposures will disappear, but will form bright trails from their lights at night.

单词	Solargraphy
释义	Solargraphy 英语百科 Long-exposure photography Long-exposure photography or time-exposure photography 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 bands, head and tail lights of cars become bright streaks, stars form trails in the sky and water smooths over. Only bright objects will form visible trails, however, dark objects usually disappear. Boats during daytime long exposures will disappear, but will form bright trails from their lights at night.
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Solargraphy

Long-exposure photography