Canon Speedlite 470EX-AI Instruction Manual page 70

Flash Control from the Camera's Menu Screen
Flash Custom Function Settings
You can set Custom Functions for the Speedlite from the camera's
menu screen. The details displayed vary by the camera. If C.Fn-21 to
23 are not displayed, set them by operating the Speedlite. For the
Custom Functions, see pages 82-87.
Custom Function number
When using a camera released in 2011 or earlier, or with EOS REBEL
T7/2000D/1500D, EOS REBEL T100/3000D/4000D, EOS REBEL T6/
1300D and EOS REBEL T5/1200D, the C.Fn-21 to 23 settings are not
cleared even if [Clear all Speedlite C.Fn's] or [Clear ext. flash C.Fn
set] is selected. When the procedure to clear all the Custom Functions
described on page 84 is performed, all the Custom Functions (except
C.Fn-00) are cleared.
Personal Functions (P.Fn, p.88) cannot be set or all cleared at once from
the camera's menu screen. Set them by operating the Speedlite.
70
Select [Flash C.Fn settings].
1
Select [Flash C.Fn settings] or
[External flash C.Fn setting].
The flash Custom Function settings
screen is displayed.
Set the Custom Function.
2
Select the Custom Function number.
Select an item and set the function.
To clear all the Custom Function
settings, select [Clear settings] in
step 1, then [Clear all Speedlite
C.Fn's] or [Clear ext. flash C.Fn
set.].