Canon EOS Rebel SL3 DSLR Camera with 18-55mm Lens (Black) - Manual (Page 175)

175
Setting the Flash Function
With the built-in flash or an EL/EX-series, external Speedlite compatible
with the flash function settings, you can use the camera’s menu screen to
set flash functions and the external Speedlite’s Custom Functions.
If you use an external Speedlite, attach the Speedlite to the camera
and turn on the Speedlite before setting the flash functions.
For details on the external Speedlite’s flash functions, refer to the
Speedlite’s instruction manual.
1
Select [Flash control].
z Under the [
z
] tab, select [Flash
control] , then press < 0 >.
2
Select an item.
z Select the menu option to be set, then
press < 0 >.
Flash Firing
Set to [
a
] (in Basic Zone modes or
d
mode) to have the flash fire automatically,
based on shooting conditions.
Set to [
D
] to have the flash always fire
when you shoot.
Select [
b
] (in Creative Zone modes) to
keep the flash off, or if you will use the
AF-assist beam.
z Even if [Flash firing] is set to [
b
] , if focus is difficult to achieve in low
light, the flash may still fire a series of flashes (“AF-Assist Beam Settings”
( = 167)). To prevent the built-in flash from firing, push it down with your
fingers.