Canon A650 IS - Manual (Page 121)

Various Shooting Methods 119
See Functions Available in Each Shooting Mode (p. 207) .
Switching the Timing at which the Flash Fires
Shooting Mode
1st-curtain
The flash fires right after the shutter opens, regardless of the
shutter speed. Usually, the 1st-curtain is used when
shooting.
2nd-curtain
The flash fires right before the shutter closes. Compared
with the 1st-curtain, the flash fires later and allows you to
shoot images in which, for example, a car’s taillights seem to
trail off behind.
1
Select [Flash Sync].
1. Press the button.
2. In the menu, use the or
button to select [Flash Sync].
2
Accept the setting.
1. Use the or button to select
[1st-curtain] or [2nd-curtain].
2. Press the button.
Image shot with the 1st-curtain
setting Image shot with the 2nd-curtain
setting