Canon EOS 80D Instruction Manual page 248

Wireless Flash PhotographyN
Setting [E-TTL II meter.] to [Evaluative] is recommended.

Firing a test flash is not possible with the slave unit.

248
Set [Flash mode: E-TTL II].
4
Set [Wireless func.] to [0].
5
Set [Channel].
6
Set the transmission channel (1-4) to

the same one as the slave unit.
Set [Firing group] to [1All].
7
Take the picture.
8
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].