Long Exposure Photography

There is no absolute definition of a long exposure, but in relative terms, the photographs in this theme use a longer than expected shutter speed, either in order to make a particular effect such as brushed water, or in order to simplify composition by rendering areas of the frame devoid of cluttered detail.

There are several techniques for prolonging exposure: in some cases, one or more ND filters have been used to slow down the shutter speed; in other cases, crossed circular polariser filters were used for a more extreme effect; some images were made using welding glass as a filter; finally, a few images in this section are synthetic long exposures, composites made by averaging or stacking many individual frames taken over a longer period of time.

long-exposure blur exposure slow speed long time duration shutter effect