Canon POWERSHOT S2 IS User Manual page 44

1
Select [Slow Synchro] from the
[[] (Rec,)] menu,
Selecting Menus and Settings (p, 79)
2 Use the < or I_ button on the omni selector to select [On]
and press the MENU button,
_ The flash fires w#_ automatlc adjustments when [Flash Adjust] _s set to
I_1 [Auto] in the Rec. menu. Automatic adjustment sets the flash intensity
-- (p, 106). When shooting in M mode, or with [Flash Adjust] set to
[Manual], the flash fires with the manually set adjustments. For manual
flash, you set flash intensity in advance (p. 106).
When [Flash Adjust] is set to [Auto], the flash fires twice. A pre-flash
will fire and will be followed by the main flash. The pre-flash is used by
the camera to obtain the subject's exposure data so that the main flash
can be set to the optimal intensity for the shot. However, the pre-flash
does not fire when shooting with FE Lock enabled (p. 104),
The fastest shutter speed for flash synchronization is 1/500 second•
The camera automatically resets the shutter speed to 1/500 second if
a faster speed is selected.
Shots cannot be taken while the flash is charging.
The flash may take up to approximately 10 seconds to charge. Actual
times will vary according to usage and the battery charge.
When shooting with [Slow Synchro] set to [On], camera shake may
become a factor. Use of a tripod is recommended.
In the case of P, Tv, Av, and M, the flash mode setting is not
canceled even when the camera is turned off,
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