Canon Speedlite 470EX-AI Instruction Manual page 57

Press the <z> button.
3
Take the picture.
4
x2
V AI.B Semi-Auto Shooting
After you determine the bounce angle
in step 2, press the <z> button to
store (register) the bounce angle in
the Speedlite.
To re-register the bounce angle,
perform steps 2 and 3 again.
When the orientation (position) of the
camera changes after the bounce
angle is stored (registered) in the
Speedlite in step 3, double-click the
camera's shutter button (press the
shutter button halfway two times in a
row within a short period).
The flash head automatically moves
and resets to make the bounce angle
substantially the same as when
stored (registered).
Focus on the subject and take the
picture in the same way as with
normal flash photography.
Play back the image, then check the
result.
57