Av Setting The Aperture - Canon PowerShot G7 User Manual

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Av
Setting the Aperture
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Av
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. 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 .
• When using the control dial, the
Av
bar will be displayed and the
aperture value can be changed.
range
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.
F2.8 F3.2 F3.5 F4.0 F4.5 F4.8 F5.0 F5.6 F6.3 F7.1 F8.0
• You can change the automatically selected combinations of
shutter speeds and aperture values without altering the
exposure (p. 69).