137
The shutter controls not only exposure,
but also the ability to stop motion. Fast
shutter speeds are used in sport pho-
tography 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 recom-
mended 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.34). The image can be deleted if not acceptable and another test image can be
taken at a different setting.
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