Canon A550 Digital Camera User Manual


 
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Raise the ISO speed to use a fast shutter speed when you wish to
reduce the effects of camera shake or avoid blurry subjects, or to
turn the flash off when shooting in a dark area.
Adjusting the ISO Speed
Shooting Mode
1
Press the ISO button to cycle
through ISO settings.
zYou can advance to the next option
each time you press the button: */
/////.
* Default setting.
zWhen in shooting mode, only or can be
selected.
z and are not available in long shutter mode (p. 45).
zSelecting (Auto) sets the optimal ISO speed according to
the light level when shooting. Since the ISO speed setting
will automatically be raised in dark places, the camera will
select a faster shutter speed and reduce the chances of
camera shake.
zSelecting (High ISO Auto)* sets the sensitivity to a
higher value than the setting. This sets the shutter speed
faster, reducing the potential for camera shake or blurry
subjects compared with the setting.
* Noise in the recorded image may be higher than for the
setting.
When the camera is set to or and you press the shutter
button halfway, the camera will set and display the ISO speed.
This ISO speed will also appear in the playback information.