Canon EOS 77D, Instruction Manual

Page: 237 / 502

237
Custom Wireless Flash Photography
N
[
1
(A:B)] Firing multiple slave units in multiple groups
You can divide the slave units into
groups A and B, and can change the
flash ratio to obtain the desired lighting
effect.
Refer to the Speedlite’s instruction
manual and set one slave unit to firing
group A and the other to firing group B.
Position the Speedlites as shown in the
illustration.
1
Select [Wireless func.].

Follow step 2 on page 235 to select
[
0
], then press <
0
>.
2
Set [Firing group] to [
1
(A:B)].
3
Set the A:B flash ratio and shoot.

Select [ A:B fire ratio ] and set the
flash ratio.
A B
If [ Firing group ] is set to [
1
(A:B) ], group C will not fire.
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) for the exposure level.