Setting The Aperture; Manually Setting The Shutter Speed And Aperture; Aperture Setting Display - Canon POWERSHOT S2 IS User Manual

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 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.
• If the image would be underexposed (too dark) or overexposed (too bdght) and
the correct exposure cannot be obtained, the shutter speed display on the LCD
monitor (or viewfinder) tams red. Adjust the value with the _ or • button so that
the shutter speed display turns white.
• Some aperture values cannot be selected depending on the zoom position.
• In this mode, the maximum shutter speed with synchronized flash is 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 Setting Display
The larger the aperture value the smaller the lens opening, allowing less
light to enter the camera.
If/2.7 f/3.2 f/3.5 f/4.0 f/4.5 f/5.0 f/5.6 f/6.3 f/7.1 f/8.0 I
I Safety Shift
With Tv and Av modes, if [Safety Shift] is turned [On] in the Rec. menu,
the shutter speed or aperture value is automatically adjusted for the
correct exposure when it cannot be otherwise obtained.
Safety Shift is disabled when the flash is enabled.
You can manually set the shutter speed and aperture to achieve a
particular effect. Use this for shooting in special conditions, such as for
time exposures.
• The brightness of the LCD monitor (or viewfinder) matches the selected
shutter speed and aperture value. When you select a fast shutter speed or
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