Canon A720 1S, Руководство пользователя

Страница: 87 / 211

Shooting Using the Mode Dial
85
See Functions Available in Each Shooting Mode (p. 206).
The aperture adjusts the amount of light entering through the lens.
When you set the aperture value, the camera automatically selects a
shutter speed to match the brightness.
Selecting a lower aperture value (opening the aperture) allows you to
blur 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.
Setting the Aperture
Shooting Mode
1
Set the mode dial to
.
2
Configure the aperture setting.
1. Use the or button to change the aperture setting.
3
Shoot.
• If the shutter speed is shown in in red when the shutter button
is pressed halfway, 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. 84).
z 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
z The larger the aperture value, the smaller the lens aperture.
F2.8 F3.2 F3.5 F4.0 F4.5 F4.8 F5.0 F5.6 F6.3 F7.1 F8.0