A: Manual Flash - Canon Speedlite 470EX-AI Instruction Manual

a: Manual Flash

You can set the flash output from 1/1 full output to 1/128 power in 1/3-
step increments.
Use a flash meter (commercially-available) to determine the required
flash output to obtain a correct flash exposure. Setting the camera's
shooting mode to <f> or <a> is recommended.
Shooting distance
For guide number details with manual flash, see page 109.
Without pressing the <O> button of the <S> cross keys, you can
directly turn <9> and set the flash output (C.Fn-13, p.86).
36
Set the flash mode to <a>.
1
Set the flash output.
2
Aperture
Press the <E> button of the
<S> cross keys.
Turn <9> to select <R>, then
press <8>.
Press the <O> button of the <S>
cross keys.
Turn <9> to set the flash output,
then press <8>.
When you press the camera's shutter
button halfway, an approximate
indication of the effective shooting
distance and the aperture value are
displayed.