Canon PowerShot G1 X - Manual (Page 125)

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Set your preferred aperture value before shooting as follows. The camera
automatically adjusts the shutter speed to suit your aperture value.
For details on available aperture values, see “Specifications” in the Getting
Started guide.
Enter B mode.
z Set the mode dial to B.
Set the aperture value.
z Turn the z dial to set the aperture value.
Specific Aperture Values (Av Mode)
Still Images
• Orange display of shutter speeds when you press the shutter button
halfway indicates that the settings deviate from standard exposure.
Adjust the aperture value until the shutter speed is displayed in white,
or use safety shift (see below).
• B: Aperture value (size of the opening made by the iris in the lens)
• To avoid exposure problems in M and B modes, you can have the camera
automatically adjust the shutter speed or aperture value, even when standard
exposure cannot otherwise be obtained. Press the
n button and set
[Safety Shift] on the 4 tab to [On] (p. 41).
However, safety shift is disabled when the flash fires.
• You can customize camera operation so that turning the 7 dial changes the
aperture value (p. 129).
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