Canon Speedlite 430EX III-RT - Manual (Page 48)

48
' Radio Transmission Wireless Flash Shooting
Shooting in a Different Flash Mode Set for Each Group (p.63)
Wireless shooting using radio transmission has advantages over wireless
shooting using optical transmission, such as being less affected by
obstacles, and not having to point the slave unit’s wireless sensor toward
the master unit. The main functional differences are as follows.
*1-3: Some restrictions apply depending on the camera used.
(See p.49 and 63 for *1, p.65 for *2, and p.66 for *3.)
Difference between Radio Transmission and Optical Transmission
Function Radio Transmission Optical Transmission
Transmission distance Approx. 30 m/98.4 ft.
Approx. 15 m/49.2 ft.
(indoors)
Firing group control
Up to 5 groups* 1
(A, B, C, D, E)
Up to 3 groups
(A, B, C)
Slave unit control Up to 15 units No restriction
Channel Auto, Ch. 1 - 15 Ch. 1 - 4
Wireless radio ID 0000-9999 –
Slave
operations
Test flash firing k –
Modeling flash k * 2 –
Release k * 3 –
A
B
C
E
D
Manual flash
Manual flash
E-TTL II
E-TTL II
Manual flash
* The flash mode settings are indicated only as an example.
Ceiling