Canon EOS 70 Instruction Manual page 127

Using Wireless Flash
*
Creative Wireless Flash Shooting
Flash Exposure Compensation
When [Flash mode] is set to [E-TTL II], flash exposure compensation
can be set. The flash exposure compensation settings (see below)
which can be set will differ depending on the [Wireless tunc.] and
[Firing group] settings.
[Flash expo comp]
qp
The flash exposure compensation is
applied to the built-in flash and all
external Speedlites.
[~
expo comp.]
·fJ
The flash exposure compensation is
applied to the built-in flash.
[.. expo comp.]
4)
The flash exposure compensation is
applied to all external Speedlites.
I
[A,S expo comp.]
ff$
The flash exposure compensation is
applied to both groups A and B.
[Grp.C expo comp]
~
The flash exposure compensation is
applied to group C.
FE lock
If [Flash mode] is set to [E-TTL II], you can press the
<
M-Fn
>
button to
set FE lock.
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