3Custom Function Settings
C.Fn II -6 Shutter curtain sync.
0:1st-curtain synchronization
1:2nd-curtain synchronization
The flash fires immediately before the exposure ends. When this is combined with a slow sync speed, you can create a trail of light such as from car headlights at night.
This Custom Function can be used to obtain 2nd-curtain sync effects even with EX-series Speedlites which do not have this feature (except Speedlite 270EX).
When using EX-series Speedlites having the shutter curtain synchronization function, C.Fn II -6’s setting does not take effect. Set the shutter curtain synchronization in the Flash functions settings menu (p.122) or directly on the flash. When using a Speedlite 270EX, shutter curtain synchronization can be set in the Flash functions settings menu.
If 1 is set and you press the shutter button completely, note that the flash will fire a total of two times right before the exposure ends.
When using 2nd-curtain sync, set the shutter speed to 1/50 sec. or slower. If the shutter speed is 1/60 sec. or faster, 1st-curtain sync will be applied even if 1 is set.
C.Fn II -7 Flash firing
Enables or disables the firing of an external flash or non-Canon flash connected to the PC terminal.
0:Enable
1:Disable
Convenient when you want to use the external flash’s AF-assist beam only. Note that whether or not the AF-assist beam is emitted depends on the C.Fn III -15 setting.
C.Fn II -8 Viewfinder info. during exposure
0:Disable
1:Enable
The viewfinder information will be displayed even during an exposure. Displays the exposure setting, number of remaining shots, etc., during continuous shooting.
When the shooting mode is set to “Bulb”, even if setting 1 is set, it will not take effect.
