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Shutter-Priority Auto exposure mode
You manually set the shutter speed you want. To freeze the
action, use a high shutter speed; to create motion effects,
choose a slower shutter speed. The F70/F70
D
’s
microcomputer automatically sets the proper aperture to match
the manually selected shutter speed for correct exposure. See
pages 52 to 54 for Shutter-Priority Auto operation.
Note that Shutter-Priority Auto exposure mode operates only
with Nikon lenses that have a built-in CPU (AF Nikkor and AI-P
Nikkor lenses).
Aperture-Priority Auto exposure mode
You can control depth of field by varying the aperture. Smaller
apertures make the background and foreground sharper
(recommended for landscape pictures) while larger apertures
tend to blur the background (recommended for portraits).
Your selected aperture will determine the shutter speed that is
automatically set by the camera’s microcomputer. When using
smaller apertures with correspondingly slower shutter speeds,
remember that, generally, any speed below 1/(focal length in
use) second, requires the use of a tripod to prevent picture blur
due to camera shake. The higher the corresponding shutter
speed to the aperture you set, the easier it is to stop action.
Adjust the selected aperture if the speed is not appropriate for
conditions or the specific effect you want.
For Aperture-Priority Auto operation, see pages 55 to 57.
Manual exposure mode
Manual exposure control allows you to make both aperture and
shutter speed settings. For a technically correct exposure,
follow the recommendation of the camera’s light meter, as
indicated by LCD readout. To achieve a specific creative effect
(e.g., intentional blur, intentional under- or over-exposure),
disregard the LCD and modify the recommended exposure
settings.
For Manual exposure operation, see pages 58 to 60
Slow shutter speed
Large aperture
Small aperture
Pictures taken at different shutter speeds
Pictures taken at different apertures
High shutter speed
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