Canon PowerShot S2 IS User Manual page 37

AF-assist Beam
The AF-assist Beam will sometimes emit when the shutter button is
pressed halfway to assist focusing in certain conditions, e.g., dark
conditions.
The AF-assist Beam can be turned off (p. 77).
For example, if animals are your subject, turn off the beam when shooting
in the dark to avoid startling them.
However, please keep in mind the following facts.
- Turning the AF-assist Beam off when shooting in dark places may make
it more difficult for the camera to focus.
- Even when the AF-assist beam is turned off, the red-eye reduction lamp
fires when [Red-eye] is set to [On].
Image Stabilizer Function
The image stabilizer function allows you to minimize the camera shake
effect (blurred images) when you shoot distant subjects that have been
magnified or when you shoot in dark conditions. This function's default
setting is [On].
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From the [
or button.
Selecting Menus and Settings (p. 73)
[Continuous], [Off], [Shoot Only] and [Panning] can be selected.
Continuous
Shoot Only
Panning
(Rec.)] menu, select [IS Mode], and press
Image stabilization is always active.
Image stabilization is active when the shutter button is pressed all the way
down.
Image stabilization is active when the camera shakes vertically (up and
down).
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