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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 cas-
cading 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. For critical work, take a
test photograph at the set aperture or shutter speed and view the result in Quick View. The image
can be deleted if not acceptable and another test image can be taken at a different setting.
What is an Ev?
Ev stands for exposure value. A change of
one Ev adjusts the exposure calculated by
the camera by a factor of two.
+2.0 Ev
+1.0 Ev
±0.0 Ev
–1.0 Ev
–2.0 Ev
4X as much light
2X as much light
1/2 as much light
1/4 as much light
Calculated exposure