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The shutter controls not only exposure, but also
the ability to stop motion. Fast shutter speeds are
used in sport photography to stop action. Slow
shutter speeds can be used to show the flow of
motion such as water cascading over a waterfall.
The use of a tripod is recommended with slow
shutter speeds.
The change in aperture and shutter speed is not apparent in the live image. Unlike film cameras,
test photographs can be taken and immediately viewed. For critical work, take a test photograph at
the set aperture or shutter speed and view the result in Quick View (p. 30). The image can be delet-
ed if not acceptable and another test image can be taken at a different setting.