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Template:POTD/2011-06-13

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Long-exposure photograph
A long-exposure seascape photograph of rocks at Clifton Beach, Tasmania. In photography, exposure is the total amount of light allowed to fall on the photographic medium (film or sensor): the longer the shutter speed, the more light is let in. This can be done for technical reasons, such as in low-light conditions, or to create an artistic effect as shown here, when the ocean waves appear to be fog.Photo: JJ Harrison