Canon EOS 90D DSLR Camera with 18-135mm Lens - Manual (Page 189)

189
Wireless Flash Photography Using Optical Transmission
Wireless Multiple-Flash Photography with Specifi ed Output
Available when [Flash mode] is set to [Manual fl ash] . Available fl ash
output options (such as [
1
fl ash output] and [Group A output] ) vary
depending on [Wireless func.] setting details (see below).
Wireless functions: 0
 Firing group:
1
All
The same manual fl ash output is set for
all receivers.
 Firing group:
1
(A:B)
Receivers can be assigned to fl ash
groups A or B, and you can set the fl ash
output of each.
Wireless functions: 0 + 3
 Firing group:
1
All and
2
You can set the fl ash output of senders
and receivers separately.
 Firing group:
1
(A:B)
2
Receivers can be assigned to fl ash
groups A or B, and you can set the fl ash
output of each. Flash output can also be
set for the sender.