Canon 550EX manual Wireless Flash Photography

For Type-A Cameras

Wireless Flash Photography

This section covers wireless flash photography with the 550EX. It explains the 550EX’s built-in master and slave flash features.

550EX Wireless Flash Features

•A wireless flash system with multiple Speedlite 550EXs can be used as easily as a single, on-camera Speedlite 550EX.

•Up to three 550EXs or three groups of 550EXs can be set as slave units for automatic control.

•550EXs set as slave units can be positioned to obtain the desired lighting effects. All of their settings are controlled by the master unit and camera.

[1]Wireless System Setup and Testing (page 52)

[2]Wireless E-TTL Autoflash (page 60)

[3]Wireless Manual Flash (page 71)

[4]Wireless Stroboscopic Flash (page 73)

[5]Manual or Stroboscopic Flash With a Slave Unit (page 74)

•This section assumes that the Speedlite 550EX is used with the EOS-3.

•Before proceeding, first turn on the main switch on the EOS-3 and 550EX.

•In these Instructions, a Speedlite 550EX whose wireless selector has been set to

is called the “master unit” and a 550EX whose wireless selector has been

set to is called a “slave unit.”

•For EOS-3 operations, refer to the EOS-3 Instructions.

•With the EOS ELAN II/ELAN IIE, 50/50E, 300/REBEL 2000, 500N/REBEL G, 3000N/66/REBEL XSN, IX, and IX 7/IX Lite, only one slave group can be used for wireless E-TTL autoflash control.

•Quick flash cannot be used with wireless flash photography.

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