Nikon 990 - Manual (Page 43)

P 1/60 F2.7
NORMAL NORMAL
[ 10 ]
Advanced Photo
graph
y:
Exposur
e Mode
43
Exposure Mode
In M-REC, you can choose from four exposure modes that
make it possible to manually adjust shutter speed and/or aper-
ture and still achieve optimal exposures. To set the exposure
mode:
Mode
Mode How it works When to use it
Programmed
auto
Camera sets shutter
speed and aperture
for best exposure.
Flexible program can
be used to select
further combinations
of shutter speed and
aperture that yield
equivalent exposure.
Best for general use
and for snapshots
Confirm mode
setting in control
panel or LCD
monitor
Press while turning
command dial
How it works When to use it
Aperture-
priority auto
User chooses
aperture;
camera sets
shutter speed
for best expo-
sure
Large apertures (small f
numbers) blur background
details and increase range
of flash; small apertures
(large f numbers) increase
depth of field, bringing both
main subject and back-
ground into focus
Shutter-
priority
auto
User chooses
shutter speed;
camera sets
aperture for
best exposure
High shutter speeds freeze
motion; low shutter speeds
suggest movement by
blurring moving objects
Manual
User chooses
shutter speed
and aperture
Use when you want com-
plete control over expo-
sure
The following modes are available:
The term “exposure” refers to the amount of light allowed to enter the
camera when a photograph is taken. The exposure depends on the aper-
ture (the size of the opening through which light enters the camera) and
shutter speed (the length of time that light enters the camera). The same
exposure can be achieved using many different combinations of aperture
and shutter speed. You can use flexible program to choose from one of
several combinations, or set either aperture or shutter speed to suit your
creative designs, while the camera takes care of the other to ensure cor-
rect exposure. Manual exposure mode gives you the freedom to modify
exposure from the value suggested by the camera.