Setting The Aperture - Canon PowerShot A510 User Manual

Setting the Aperture

The aperture adjusts the amount of light that
passes through the lens. When you set the
aperture in the aperture-priority AE mode, the
camera automatically selects a shutter speed to
match the brightness.
Selecting a lower aperture value (opening the
aperture) allows you to fade the background and
create a beautiful portrait. A higher aperture value
(closing it) brings the entire range from foreground
to background into focus. The larger the aperture
value, the greater the range of the image brought
into clear focus.
If the shutter speed shows in red on the
LCD monitor, the image is underexposed
(insufficient light) or overexposed (too much
light). Adjust the aperture value using the
or button until the shutter speed display
turns to white.
Some aperture values may not be available
with certain zoom positions (p. 78).
Shooting – Advanced Functions
Please note that camera shake becomes a
factor with larger aperture values that slow
down shutter speeds. If
warning) appears on the LCD monitor,
secure the camera to a tripod before
shooting.
In this mode, the shutter speed range with
synchronized flash is 1/60 second to 1/500
second. The aperture value setting may
therefore be changed automatically to
match the synchronized flash speed even if
its value was set previously.
Aperture Value Display
The larger the aperture value, the smaller the
lens aperture.
F2.6 F3.2 F3.5 F4.0 F4.5 F5.0 F5.5 F5.6
F6.3 F7.1 F8.0
(camera shake
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