I slave groups, Rtlot – Canon 550EX User Manual

Page 69

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Wireless E-TTL Autoflash With Flash Ratio ON

ETTL BZoom ^Mmm

hM>K +____________- SB. 3CT ZOOM

rtLOT

Q- ri_

4A Press the button to

register the setting.

• The flash ratio bar and aaSB* A:B:C

remain displayed.

• To change the flash exposure compensation

amount, repeat steps 8 to 10.

Follow the basic procedure for

' • wireless E-TTL autoflash on page 60

and take the picture.

^ k • Even if you have slave units A. 8. and C. if oniy ■¡uii.-a A;B is setected, slave unit C

will not fire.

■ If slave unit C is used to Illuminate the subject directly, overexposure may result.

i Slave Groups

Multiple slave units having the same

slave ID will be recognized and

controlled as one slave group. The group
will be treated as one slave unit.

• in the left figure, the slave ID is A for all three

slave units. They will be controlled as slave unit A
even as a group.