Canon EOS 90D DSLR Camera with 18-135mm Lens - Manual (Page 180)

180
M
Wireless Flash Photography Using
Optical Transmission
You can use the built-in fl ash as the sender for external Canon Speedlites
compatible with optical wireless fl ash photography to shoot with wireless
multiple-fl ash lighting.
Receiver Setup and Positioning
Referring to the instruction manual of the external Speedlite (receiver),
confi gure the following settings.
 Set up the Speedlite as a receiver.
 Set the camera and Speedlite to the same channel.
 To control the fl ash ratio, set the receiver’s fl ash group.
 Position the camera and receiver within the following range.
 Arrange the receiver with its wireless sensor facing the camera.
Approx. 80°
Approx. 7 m
Approx. 5 m
Approx. 10 m
Outdoors
Indoors
Approx. 7 m
Canceling Receiver Auto Power Off
Press the camera’s <
A
> button. For manual fl ash, cancel by pressing the
receiver’s test fl ash button.