Canon Speedlite 470EX-AI Instruction Manual page 77

If there is a fluorescent light or computer monitor near a receiver unit, the
presence of the light source may cause the receiver unit to malfunction and
fire inadvertently.
The receiver unit's flash coverage is set to 24 mm. You can also set the
flash coverage manually.
If the receiver unit's auto power off takes effect, press the sender unit's
test flash button to turn on the receiver unit. Note that the test flash
cannot be performed while the camera's metering timer, etc. is operating.
You can change the time until the receiver unit's auto power off takes
effect (C.Fn-10, p.86).
You can disable the blinking of the AF-assist beam emitter when
recharge is complete for the receiver unit (C.Fn-23, p.87).
a: Fully Automatic Wireless Flash Photography
Check that the flash is ready.
6
When the receiver unit is ready, the
AF-assist beam emitter blinks at
approx. 1-second intervals.
Check that the sender unit's flash-
ready lamp is lit.
Check the performance.
7
Fire a test flash from the sender unit.
The receiver unit fires. If it does not
fire, check that it is placed within the
transmission range (p.72).
Take the picture.
8
Set the camera and take the picture
in the same way as with normal flash
photography.
77