Pentax DS Operation Manual - Page 129

Setting the Exposure, Effect of Aperture and Shutter Speed

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Setting the Exposure 127 Effect of Aperture and Shutter Speed Correct exposure of the subject is determined by the combination of shutter speed and aperture setting. There are many correct combinations of shutter speed and aperture for a particular subject. Different combinations produce different effects. Effect of Shutter Speed The shutter speed determines the length of time that light is allowed to strike the CCD. Adjust the amount of light striking the CCD. Using slower shutter speed 5 If the subject is moving, the image will be blurred because the shutter is open longer. It is possible to enhance the effect of motion (rivers, waterfalls, waves, etc.) by intentionally using a slower shutter speed. Using faster shutter speed Choosing a faster shutter speed will allow freezing the action of a moving subject. A faster shutter speed also helps prevent camera shake. Function Reference

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127
5
Function Reference
Setting the Exposure
Correct exposure of the subject is determined by the combination of
shutter speed and aperture setting. There are many correct combinations
of shutter speed and aperture for a particular subject. Different
combinations produce different effects.
The shutter speed determines the length of time that light is allowed to
strike the CCD. Adjust the amount of light striking the CCD.
Using slower shutter speed
If the subject is moving, the image will be
blurred because the shutter is open
longer.
It is possible to enhance the effect of
motion (rivers, waterfalls, waves, etc.) by
intentionally using a slower shutter speed.
Using faster shutter speed
Choosing a faster shutter speed will allow
freezing the action of a moving subject.
A faster shutter speed also helps prevent
camera shake.
Effect of Aperture and Shutter Speed
Effect of Shutter Speed