Canon 550D instruction manual 148, Flash mode, Shutter sync

3Setting the FlashN

[Built-in flash func. setting] and [External flash func. setting] Settable Functions

Function	[Built-in flash		[External flash	Page
	func. setting]		func. setting]
Flash mode	E-TTL II (Fixed)		k	148
Shutter sync.		k		148
FEB*	–		k	–
Flash exposure compensation		k		88
E-TTL II		k		149
Zoom*	–		k	–
Wireless setting*	–		k	–

*Regarding [FEB] (Flash exposure bracketing), [Zoom], and [Wireless set.], refer to the Speedlite’s instruction manual.

Flash mode

With an external Speedlite, you can select the flash mode to suit your flash shooting.

[E-TTL II] is the standard mode of EX-series Speedlites for automatic flash shooting. [Manual flash] enables you to set the flash output yourself. This is for advanced users.

*For other flash modes, refer to your Speedlite’s instruction manual.

Shutter sync.

Normally, set this to [1st curtain] so that the flash fires immediately after the exposure starts.

If [2nd curtain] is set, the flash will fire right 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. With 2nd curtain sync, two flashes will be fired: Once when you press the shutter button completely, and once immediately before the exposure ends. However, with shutter speeds faster than 1/30 sec., 1st curtain sync will automatically take effect.

If an external Speedlite is attached, you can also set [Hi-speed]. For details, see the Speedlite’s instruction manual.

148