User's Manual

Flash Ratio with E-TTL II
19
1.All (A+B+C)
R a t i o of f, A/ B / C th r e e
flashes automatically fire
with same output, flash
e x po su r e c o mp en s a t io n
(FEC)can be set.
2.A:B
Set fire ratio (8:1-1:8， 1/2-
stop increments) and flash
exposure compensation for
flashes of Group A and B,
Group C does not fire.
3.A:BC
Set fire ratio and FEC for
flashes of Group A and B,
FEC of Group C can be set
solely (Group C flash may
be overexp o s u re t o the
subject , suitable for use as
a backlight).
Flash fire ratio and FEC of the A, B, C three firing
groups can be set under E-TTL II flash mode.