Canon EOS 90D, Advanced User'S Manual

Page: 187 / 646

187
Wireless Flash Photography Using Optical Transmission
Autofl ash With Multiple Receivers and a Sender
You can include a sender in the wireless fl ash photography arrangements
described from
=
185 to
=
186.
1
Set these basic settings.
Flash mode : E-TTL II
Wireless functions :
0
+
3
Channel :
(same as receiver)
2
Set [Firing group].

Select
[
1
All and
2
]
or
[
1
(A:B)
2
]
.

Before shooting with
[
1
(A:B)
2
]
, set
the A:B fl ash ratio.
[
1
All and
2
]
A B
[
1
(A:B)
2
]