Canon EOS 7D Instruction Manual

121
3 Setting the FlashN
Shutter sync.
Normally, set this to [ 1st curtain] so that the flas h 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 ca r 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...

122
3 Setting the Flash N
1Display the Custom Function.
Select [ External flash C.Fn setting ], 
then press < 0>.
2Set the Custom Function.
 Turn the < 5> dial to select the 
function number, then set the 
function. The procedure is the same 
as setting the camera’s Custom 
Functions (p.220).
 To clear all the Custom Function 
settings, select [ Clear ext. flash C.Fn 
set. ] in step 1.
Setting the External Speedlite Custom Functions
On the [External flash func. setting ] screen, setting the wireless...

123
The camera’s built-in flash can work as a master unit with Canon 
Speedlites having a wireless slave feature and wirelessly trigger the 
Speedlite to fire. Be sure to read about wireless flash photography in 
the Speedlite’s instruction manual.
Regarding your Speedlite (slave unit),  refer to its instruction manual and 
set it as follows. Slave unit contro l settings other than the below are all 
set with the camera. Different ty pes of slave units can be used and 
controlled together.
(1) Set the...

124
Using Wireless FlashN
This shows the most basic setup 
for fully-automatic wireless flash 
with one Speedlite.
Steps 1 to 3 and 6 to 8 apply to 
all wireless flash shooting. 
Therefore, these steps are 
omitted in the other wireless 
flash setups explained on the 
following pages.
On the menu screens, the  
and <
1> icons refer to the external 
Speedlite, and the <
3> and  
icons refer to the built-in flash.
1Press the  button to pop-up 
the built-in flash.
 For wireless flash, be sure to pop-up...

125
Using Wireless FlashN
5Select [Wireless func.].
For [ Wireless func.], select [ 0], 
then press < 0>.
 Under [ Wireless func.], [ Channel], 
etc., will be displayed.
6Set [Channel].
 Set the channel (1-4) to the same one 
as the slave unit.
7Fire a test flash.
After checking that  the slave unit is 
ready to fire, go to the screen in step 
5 and press the  button.
 The slave unit will fire. If it does not 
fire, check your settings again 
(p.123).
8Take the picture.
 Set the camera and take the...

126
Using Wireless FlashN
This shows fully-automatic 
wireless flash shooting with 
one external Speedlite and 
the built-in flash.
You can change the flash 
ratio between the external 
Speedlite and built-in flash to 
adjust how the shadows look 
on the subject.
1Select [Wireless func.].
Follow step 5 on page 125 to select 
[0 :3] for [ Wireless func. ], then 
press < 0>.
2Set the desired flash ratio and 
shoot.
 Select [ 1:2] and set the flash ratio 
within 8:1 to 1:1. Setting a flash ratio 
to the...

127
Using Wireless FlashN
Multiple Speedlite slave units c an be treated as one flash unit or 
separated into slave groups whose flash ratio can be set.
The basic settings are shown below. By changing the [Firing group ] 
setting, you can shoot with various wi reless flash setups with multiple 
Speedlites.
Basic settings:
Flash mode : E-TTL II
E-TTL II : Evaluative
Wireless func. : 0
Channel : (Same as slave units)
[1 (A+B+C)] Using multiple slave Speedlites as one flash unit
Convenient when you need a...

128
Using Wireless FlashN
[1  (A:B)] Multiple slave units in multiple groups 
Divide the slave units into 
groups A and B, and change 
the flash ratio to obtain the 
desired lighting effect.
Refer to your Speedlite’s 
instruction manual to set one 
slave unit’s slave ID to A 
(Group A) and the other 
slave unit’s ID to B (Group 
B) and position them as 
shown in the illustration.
1Set [Firing group] to [1  (A:B)].
2Set the desired flash ratio and 
shoot.
Select [ A:B fire ratio] and set the 
flash...

129
Using Wireless FlashN
[1  (A:B C)] Multiple slave units in multiple groups
This is a variant of the [ 1 
(A:B) ] setup on the preceding 
page. This setup has group C 
eliminate the shadows 
created by groups A and B.
Refer to your Speedlite’s 
instruction manual to set the 
slave ID of the three slave units 
to A (Group A), B (Group B), 
and C (Group C) and position 
them as shown in the 
illustration.
 1Set [Firing group] to [1  (A:B C)].
2Set the desired flash ratio and 
shoot.
Select [ A:B fire...

130
Using Wireless FlashN
The built-in flash can also be added to  wireless flash shooting explained 
on pages 123-129.
The basic settings are shown below. By changing the [ Firing group] 
setting, you can shoot with various wireless flash setups of multiple 
Speedlites complemented with the built-in flash.
1Basic settings:
Flash mode : E-TTL II
E-TTL II : Evaluative
Wireless func. : [ 0+3 ]
Channel : (Same as slave units)
2Select [Firing group].
Select the firing group, then set the 
flash ratio, flash...