Nikon 1666 Instruction Manual - Page 40

Shutter Speed and Aperture Setting

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Shutter Speed and Aperture Setting The shutter-speed setting specifies the length of time the film will be exposed by opening and closing of the shutter curtains, while the aperture setting determines the amount of light that passes through the lens. The combined value of these settings is called EV (Exposure Value). For example: using ISO100 film with a shutter speed of one second and an aperture setting of f/1.0, the EV is defined as 0 (EV 0). This value increases by one each time the aperture is stopped down or the shutter speed is increased by one unit. The shutter speed and the aperture value converted from the EV are displayed in the viewfinder of the camera. The same EV can result from various possible combinations of shutter speed and aperture setting. For example, as shown in the EV table below, when the correct exposure is obtained with a shutter speed of 1/125 second and an aperture setting of f/11 (EV14), you can obtain the same amount of light also at 1/60 second and f/ 16 or at 1/250 second and f/8, for the correct exposure. Understanding these combinations, you can change only the effect on the picture by changing the combination of shutter speed and aperture setting without changing the exposure value. Tips Priority should be given to shutter speed when movement is more important, and to the aperture setting when depth of field is more important. Exposure Values Aperture setting (f) Shutter speed (sec) when using ISO100 film 40

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40
Shutter Speed and Aperture Setting
The shutter-speed setting specifies the length of time the film will be exposed by opening
and closing of the shutter curtains, while the aperture setting determines the amount of
light that passes through the lens. The combined value of these settings is called EV
(Exposure Value).
For example: using ISO100 film with a shutter speed of one second and an aperture set-
ting of f/1.0, the EV is defined as 0 (EV 0). This value increases by one each time the
aperture is stopped down or the shutter speed is increased by one unit.
The shutter speed and the aperture value converted from the EV are displayed in the
viewfinder of the camera. The same EV can result from various possible combinations of
shutter speed and aperture setting. For example, as shown in the EV table below, when
the correct exposure is obtained with a shutter speed of 1/125 second and an aperture
setting of f/11 (EV14), you can obtain the same amount of light also at 1/60 second and f/
16 or at 1/250 second and f/8, for the correct exposure. Understanding these combina-
tions, you can change only the effect on the picture by changing the combination of shut-
ter speed and aperture setting without changing the exposure value.
Tips
Priority should be given to shutter speed when movement is more important, and
to the aperture setting when depth of field is more important.
Exposure Values
when using ISO100 film
Aperture setting (f)
Shutter speed (sec)