Canon EOS 80D - Manual (Page 248)

Wireless Flash PhotographyN
248
4
Set [Flash mode: E-TTL II].
5
Set [Wireless func.] to [0].
6
Set [Channel].
 Set the transmission channel (1-4) to
the same one as the slave unit.
7
Set [Firing group] to [1All].
8
Take the picture.
 Set the camera and take the picture
in the same way as with normal flash
shooting.
 To terminate wireless flash shooting,
set [Wireless func.] to [Disable].
 Setting [E-TTL II meter.] to [Evaluative] is recommended.
 Firing a test flash is not possible with the slave unit.