Canon EOS Rebel T5 18-55 IS II Kit - Manual (Page 196)

3 Setting the FlashN
196
Flash mode
When using an external Speedlite, you can select the flash mode to
suit your desired 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.
Regarding other flash modes, refer to
the instruction manual of an external
Speedlite compatible with the
functions.
Shutter synchronization
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 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 E-TTL
II (autoflash exposure), two flashes will be fired: Once when you
press the shutter button completely, and once immediately before
the exposure ends. Also, with shutter speeds faster than 1/30 sec.,
1st curtain synchronization will automatically take effect.
If an external Speedlite is attached, you can also select [Hi-speed]
(e). For details, refer to the Speedlite’s instruction manual.
Flash exposure compensation
See “Flash Exposure Compensation” on page 113.
E-TTL II flash metering
For normal flash exposures, set it to [Evaluative]. [Average] is for
advanced users. As with an external Speedlite, the metering is
averaged for the entire area. Flash exposure compensation may be
necessary.
COP
Y