Nikon Coolpix P90 - Manual (Page 76)

64
Sh
oot
pi
ct
ures
u
sin
g
A
, B
, C
, D
,
E
an
d
F
C (Aperture-Priority Auto) Mode
Set the aperture value and shoot pictures.
1
Rotate the mode dial to C.
2
Rotate the command dial to choose
the aperture value (f/-number).
• When the camera is zoomed all the way
out, aperture can be set to values between
f/2.8 and f/8.0; at maximum zoom, aperture
can be set to values between f/5.0 and
f/8.0.
3
Focus and shoot.
• At the default setting, the camera automatically selects
the focus area (one of nine) containing the subject
closest to the camera (
A122).
B
C (Aperture-Priority Auto) Mode
If the selected aperture would result in the picture being over- or underexposed, the aperture display
will flash when the shutter-release button is pressed halfway. Choose another aperture value and try
again.
B
Note on Shutter Speed
When Multi-shot 16 is selected for Continuous ( A118) the fastest shutter speed is changed to
1/2500 second, and the slowest shutter speed is restricted to 1/30 second.
D
Aperture and Zoom
Aperture is expressed as an f-number, which is the ratio of the focal length of the lens to the effective
diameter of the opening (aperture) through which light enters the camera. Large apertures
(expressed by small f-numbers) let more light into the camera, and small apertures (large f-numbers)
let less light. This camera has a lens with a focal length of 4.6-110.4 mm and an aperture of f/2.8 to f/
5. When the camera is zoomed out, the f-number decreases. When the camera is zoomed in, the f-
number increases.
16 16 1/125 1/125 1/125 F2.8 F2.8 16
16 16 1/125 1/125 1/125 F3.2 F3.2 16