Canon EOS 90D Instruction Manual page 397

Hide thumbs Also See for EOS 90D:

Table of Contents

Autoﬂ ash With Multiple Receivers

Multiple receivers can be treated as a single ﬂ ash unit or, if you prefer to

adjust the ﬂ ash ratio, as separate groups.

Basic settings are as follows.

[ 1 All] Firing multiple receivers as a single ﬂ ash unit

Wireless Flash Photography Using Optical Transmission

Set these basic settings.

Wireless functions

All ﬂ ash units ﬁ re at the same output,

and the total, combined output is

automatically controlled to provide

standard exposure.

Set [Firing group] to [1All].

: (same as receiver)