Yongnuo YN-622C - Flash Ratio with E-TTL II; All Groups (A+B+C) Ratio; Group A:B Ratio and FEC; Group A:B:C Ratio and FEC

Flash Ratio with E-TTL II
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1.All (A+B+C)
R a t i o o f f, A / B / C t h r e e
flashes automatically fire
with same output, flash
e x p os u re c o mpe n sat i o 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 overexposure to 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.