User Guide
185
Setting the Flash Function
z
Shutter synchronization
Normally, set this to [First-curtain
synchronization] so that the ash res
immediately after the exposure starts.
If [Second-curtain synchronization] is set, the ash will be red right
before the shutter closes. When this is combined with a slow shutter
speed, you can create a trail of light such as from car headlights at
night with a more natural feel. When second-curtain synchronization is
set together with [E-TTL II ash metering], the ash will be red twice
in a row: once when you press the shutter button completely and once
right before the end of the exposure.
If [High-speed synchronization] is set, the ash can be used at
all shutter speeds. This is eective when you want to shoot with
background blur (open aperture) in locations such as outdoors in
daylight.
When using second-curtain synchronization, set the shutter speed to
1/80 sec. or slower. If the shutter speed is 1/90 sec. or faster, rst-curtain
synchronization will be applied automatically even if [Second-curtain
synchronization] is set.