Wireless Flash Photography Using Optical Transmission - Canon EOS 90D Instruction Manual

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.

Indoors
Outdoors
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.
180
Approx. 7 m
Approx. 80°
Approx. 5 m
Approx. 10 m
Approx. 7 m
M