10
A
B
A
B
C
A
B
D
E
C
E
-
TTL II
Manual flash
Manual flash
Auto external
flash metering
Manual flash
Ceiling
Restrictions on Functions Depending on the Camera
When performing radio transmission wireless flash shoot-
ing, restrictions may apply to the flash mode, maximum
flash sync speed (referred to below as the “flash sync
speed”) and high-speed sync function, depending on the
camera that you use.
Wireless Settings
To perform wireless shooting, set the transmitter (master
unit) and flash (slave unit) with the following procedure.
Master Unit Setting
Check that the LCD display on the ST-RT indicates
“MASTER”
Slave Unit Setting
The receiver slaved radio flash will be controlled as in one
of the selected groups as set on the slaved flash. Please
see instruction for setting the group for your flash.
The RF channel/ID set
Set the same channel and ID for both the master unit and
slave unit.
To avoid interference with wireless multiple flash systems
using radio transmission that are used by other pho-
tographers, or with other devices that use radio waves
(wireless), you can change the transmission channel and
wireless radio ID.
Autoflash Shooting
with Two Slave
Groups
Autoflash Shooting
with Three Slave
Groups
Shooting with a
Different Flash Mode
set for each group
