Canon Speedlite 470EX-AI Instruction Manual page 90

>: Setting Personal Functions
P.Fn-06:
0: OFF (Disabled)
Set the function using the normal operation procedure.
1: ON (Enabled)
You can directly set the function by selecting "Flash exposure
compensation amount" and "Manual flash output" using the <S>
cross keys, then simply by turning <9>.
P.Fn-07:
You can set the maximum bounce angle in the upward direction during AI.B
full-auto shooting. When you want to limit the maximum bounce angle so that
the flash head does not turn toward the photographer, set to 2.
0: 120°
1: 140°
2: 90°
With "1" set, be careful of the direction of the flash head since the flash
head may fire toward the photographer.
P.Fn-07 takes effect only during AI.B full-auto shooting. Note that the
settings set by P.Fn-07 do not function when <z> is pressed and the
bounce angle is stored (registered) in Speedlite during AI.B semi-auto
shooting or AI.B full-auto shooting.
If P.Fn-07 setting is changed, perform the distance measurement
operation (p.49) again.
When a bounce angle that exceeds 120° is automatically set with this
setting set to 1, the angle may be set after the flash head rotates 180°.
90
^
(Dial setting changes)
When <8> is pressed and the screen
displays the settings as shown on the left, you
can set whether or not the following functions
can be directly set by simply turning <9>.
R
(Maximum bounce angle)