Flash Photography with Speedlite 550EX

Wireless, Multi-Speedlite System

Speedlite 550EX has the following three features:

(1)E-TTL autoflash

(2)Slave unit feature

(3)Master unit feature for wireless control of 550EX slave units

By using the above features, you can set up a wireless E-TTL autoflash system with multiple Speedlite 550EXs.

You can also set a flash output ratio for up to three groups of Speedlites to create the desired flash lighting effect.

• For details, see the 550EX and ST-E2’s Instructions booklet.

Wireless, multi-Speedlite system

Transmitter

ST-E2

Speedlite 550EX

Speedlite 550EX

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Canon EOS-1V HS manual Wireless, Multi-Speedlite System, Wireless, multi-Speedlite system