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 shutter speeds faster than 1/30 sec., the 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.
 Flash exposure compensation
See “ y Flash Exposure Compensation” on page 117.
 E-TTL II
For normal flash exposures, set it to [ Evaluative].
If [ Average ] is set, the flash exposure will be averaged for the entire 
metered scene as with an exter nal metering flash. Since flash 
exposure compensation may be necessary depending on the scene, 
this setting is for advanced users.
 Wireless setting
See “Using Wireless Flash” on page 123.
 Clear flash settings
With the [ Built-in flash func. setting ] or [External flash func. 
setting ] screen displayed, press the < B> button to display the 
screen to clear the flash settings. When you select [ OK], the settings 
for the flash will be cleared. 
						

							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 flash 
shooting with radio transmission is not possible. (Only setting the 
wireless flash shooting with optical  transmission is possible.) When using 
radio transmission wireless flash, set it on the flash.
 If you use Speedlite 600EX-RT/600EX or Speedlite Transmitter ST-E3-
RT for wireless flash shooting with the radio transmission function 
“Remote Release from a Slave Unit ” or “Linked Shooting” you will need 
Release Cable SR-N3. 
						

							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 Speedlite as a slave unit.
(2) Set the Speedlite’s transmission channel to the same one as  the camera.
(3) If you want to set the flash ratio  (p.128), set the slave unit ID.
(4) Position the camera and slave unit(s) within the range shown  below.
(5) Face the slave unit’s wireless sensor toward the camera.
Using Wireless Flash N
Slave Unit Settings and Position
Approx.
10m 
(32.8ft.)
Approx. 7m 
(23.0ft.)
Approx. 5m  (16.4ft.)
80
o
Approx. 7m 
(23.0ft.)
Wireless flash set-up example
Indoors
Outdoors
The camera’s master unit function cannot be used for wireless flash 
shooting with radio transmission. 
						

							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 
the built-in flash.
2Select [Flash control].
Under the [1 ] tab, select [Flash 
control ], then press < 0>.
3Select [Built-in flash func. setting].
 Select [ Built-in flash func. setting ], 
then press < 0>.
4Select [Flash mode].
 For [ Flash mode ], select [E-TTL II], 
then press < 0>.
Fully Automatic Shooting wi th One External Speedlite
80o
Approx. 7m 
(23.0ft.)
Approx.
5m (16.4ft.) Approx.
7m
(23.0ft.)
Approx. 10m
          (32.8ft.)Indoors
Outdoors 
						

							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 picture 
as you would with normal flash 
shooting.
 To terminate wireless flash shooting, 
set [ Wireless func. ] to [Disable].
Test flash can also be used to wake up slave units from auto power off.
 Setting [ E-TTL II] to [Evaluative ] is recommended.
 If you use only one external Speedlite, the [ Firing group] setting does 
not have any effect.
 The slave unit is controlled by the built-in flash’s light pulse signal.

Wireless flash will not work if the [Flash mode] is set to [MULTI flash]. 
						

							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 right of 1:1 (up to 1:8) is not 
possible.
 If the flash output is inadequate, set a 
higher ISO speed (p.64).
Fully-automatic Shooting with One External Speedlite 
and Built-in Flash
80o
Approx. 7m 
(23.0ft.)
Approx.
5m (16.4ft.) Approx.
7m
(23.0ft.)
Approx. 10m
          (32.8ft.)Indoors
Outdoors
The 8:1 to 1:1 flash ratio is equivalent to 3:1 to 1:1 stops (1/2-stop 
increments). 
						

							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 
large flash output. All the 
slave Speedlites will fire at the 
same output and controlled to 
obtain a standard exposure.
No matter what the slave ID is 
(A, B, or C), all the slave units 
will fire as one group.
Set [Firing group] to 
[1 (A+B+C)], then shoot.
Fully-automatic Shooting with  Multiple External Speedlites
80o
Approx. 7m 
(23.0ft.)
Approx.
5m (16.4ft.) Approx.
7m
(23.0ft.)
Approx. 10m
          (32.8ft.)Indoors
Outdoors 
						

							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 ratio.
A B
80
o
Approx. 7m  (23.0ft.)
Approx.
5m (16.4ft.) Approx.
7m
(23.0ft.)
Approx. 10m
          (32.8ft.)Indoors
Outdoors
The 8:1 to 1:1 to 1:8 flash ratio is equivalent to 3:1 to 1:1 to 1:3 stops (1/2-
stop increments). 
						

							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 ratio] and set the 
flash ratio.
 Set flash exposure compensation for 
group C as necessary.
A B
C
80
o
Approx. 7m (23.0ft.)
Approx.
5m (16.4ft.) Approx.
7m
(23.0ft.)
Approx. 10m
          (32.8ft.)Indoors
Outdoors
 If [Firing group ] is set to [1 (A:B) ], group C will not fire.
 If group C is pointed toward the main subject, overexposure may result. 
						

							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 exposure 
compensation, and other necessary 
settings before shooting.
Fully-automatic Shooting with the Built-in Flash and 
Multiple External Speedlites
A B
C
80o
Approx. 7m 
(23.0ft.)
Approx.
5m (16.4ft.) Approx.
7m
(23.0ft.)
Approx. 10m
          (32.8ft.)
80o
Approx. 7m 
(23.0ft.)
Approx.
5m (16.4ft.) Approx.
7m
(23.0ft.)
Approx. 10m
          (32.8ft.)AB
80o
Approx. 7m 
(23.0ft.)
Approx.
5m (16.4ft.) Approx.
7m
(23.0ft.)
Approx. 10m
          (32.8ft.)
[
1  (A+B+C)  2][ 1 (A:B)  2][ 1 (A:B C)  2]