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 <SEL/SET> 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.
44
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.
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