Wireless E-TTL Autoflash With Flash Ratio ON

1 On the master unit, press the

< > button and select

.

• Pressing the < > button changes the selection in the following loop:

(Off)

2 Press the < > button to select ON A:B.

ON A:B will blink.

3 Pressagain. the < > button

A:B and (flash ratio bar) will blink.

• In the left figure, the flash ratio bar indicates a flash ratio of 1:1.

4 Press the < > or < > button to set the A:B flash ratio.

• Press the < > button to move the flash ratio bar to the left, or press the < > button to move it to the right on the flash ratio scale.

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Canon 550EX manual Wireless E-TTL Autoflash With Flash Ratio on, On the master unit, press Button and select