Canon PowerShot G6 User Manual page 87

The nature of CCD image sensors is such that noise in the
recorded image increases at slow shutter speeds. This camera,
however, applies special processing to images shot at shutter
speeds slower than 1.3 seconds to eliminate the noise, thereby
producing high-quality images. Nevertheless, a certain amount
of processing time may be required before the next image can be
shot.
See page 206 for settings that can be changed in this mode.
Please note that camera shake becomes a factor at slow shutter
speeds. If the camera shake warning
monitor, secure the camera to a tripod before shooting.
The fastest shutter speed that can be used effectively with the
flash is 1/250 second. If you try to select a speed faster than
1/250 second, the camera automatically resets the shutter speed
to 1/250 second.
The aperture value and shutter speed change according to the
zoom state as follows.
Aperture Value
Wide Angle
Telephoto
Shutter Speed (seconds)
F2.0 – 3.5
F4.0 – 8.0
F3.0 – 5.0
F5.6 – 8.0
appears on the LCD
to 1/1250
to 1/2000
to 1/1250
to 1/2000
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