Canon Eos Rebel T6i 750d Instruction Manual

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Basically operates like a built-in flash for easy operation.
When an EX-series Speedlite (sold separately) is attached to the 
camera, almost all the autoflash control is done by the camera. In other 
words, it is like a high-output flash attached externally in place of the 
built-in flash.
For detailed instructions, refer to the EX-series Speedlite’s 
instruction manual.  This camera is a Type-A camera that can use all 
the features of EX-series Speedlites.
D  Using an External Speedlite...

D Using an External Speedlite
172
With an EZ/E/EG/ML/TL-series Speedlite set in TTL or A-TTL 
autoflash mode, the flash can be fired at full output only.
Set the camera’s shooting mode to < a> (manual exposure) or 
< f > (aperture-priority AE) and adjust the aperture setting before 
shooting.
 When using a Speedlite that has ma nual flash mode, shoot in the 
manual flash mode.
Sync Speed
The camera can synchronize with  compact, non-Canon flash units at 
1/200 sec. or slower shutter s peeds. Use a sync...

173
With the built-in flash or an EX-series, external Speedlite compatible 
with flash function settings, you can use the camera’s menu to set flash 
functions and the external S peedlite’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.
Select [Flash control].
Under the [z 1] tab, select [Flash...

3 Setting the Flash K
174
You can set the flash-sync speed for 
flash photography in the aperture-priority 
AE (f) mode.
 N : Auto
The flash sync speed is set automatically within a range of 1/200 
sec. to 30 sec. to suit the scene’s brightness. High-speed sync is 
also possible.
 V : 1/200-1/60 sec. auto
Prevents a slow shutter speed from  being set in low-light conditions. 
It is effective for preventing subject blur and camera shake. 
However, while the subject will  be properly exposed with the...

175
3 Setting the Flash K
When you use the built-in flash or an 
external, EX-series Speedlite compatible 
with flash function settings, you can 
press the  button to directly display 
the [Built-in flash settings ] or [External 
flash func. setting ] screen without first 
displaying the menu screen.
 With built-in flash
Press the  button twice.
The built-in flash will be raised.
 Press the button again to display the 
[Built-in flash settings ] screen.
 With external Speedlite
Press the  button....

3 Setting the Flash K
176
You can set the functions in the table below. The functions displayed under 
[
External flash func. setting] vary depending on the Speedlite model.
Select [ Built-in flash settings] or 
[External flash func. setting ].
 The flash function setting screen will 
be displayed. With [ Built-in flash 
settings ], only the highlighted 
functions can be selected and set.
Main Functions for [Built-in flash settings] and [External flash func. settings]
*For [ FEB] (Flash exposure...

177
3 Setting the Flash K
Flash mode
When using an external Speedlite, y ou 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 ] is for advanced users 
who want to set the [ Flash output] 
(1/1 to 1/128) themselves.
 Regarding other flash modes, refer to 
the instruction manual of a Speedlite 
compatible with the functions.
 Shutter synchronization
Normally, set this to [ 1st curtain]...

3 Setting the Flash K
178
The Custom Functions displayed under [ External flash C.Fn setting] 
vary depending on the Speedlite model.
1Display the Custom Function.
 With the camera ready to shoot with 
an external Speedlite, select 
[External flash C.Fn setting ], then 
press < 0>.
2Set the Custom Function.
Press the   keys to select the 
function number, then set the function. 
The procedure is the same as setting the 
camera’s Custom Functions (p.336).
1Select [Clear settings].
 Under the [z 1:...

179
The camera’s built-in flash can work as a master unit for Canon EX-
series, external Speedlites having a wireless slave feature. It can 
wirelessly trigger the Speedlite(s)  to fire via optical transmission.
Be sure to read the instructions and cautions about wireless flash 
photography (optical transmission) in the Speedlite’s instruction 
manual.
Regarding your Speedlite (slave unit),  refer to its instruction manual and 
set it as follows. The settings other than the ones below for the slave...

Using Wireless FlashK
180
*1: If the Speedlite does not have a transmission channel setting function, it 
operates regardless of the channel set on the camera.
*2: In small rooms, the slave unit may work even if its wireless sensor does not face  the camera. The camera’s wireless signals can bounce off the walls and be 
received by the slave unit. When using an EX-series Speedlite with fixed light-
emitting unit (flash head) and wireless sensor, take pictures while making sure it 
can fire.
Canceling...