Canon 5246B002 Leaflet

The built-in LED light provides continuous illumination. This 

is particularly useful when shooting video, as a modeling 

light, or as an AF assist beam (with Live View). The LED 

light can provide up to 3.5 hours of illumination with four 

fully-charged AA batteries. It will automatically shut off after 

60 minutes of idle use to conserve battery power. If battery 

power is low the LED Light will not turn on, even if the flash 

ready light is lit, in which case you should replace the bat-

teries. 

You can manually adjust the flash output  from full 1/1 

to 1/64

th

 power by using the External Flash Menu on 

compatible EOS SLRs*. The lower the flash output, the 

shorter the maximum range and the closer the minimum 

distance. The higher the flash output, the greater the 

maximum range. Use a hand-held flash meter or trial-and-

error to determine the correct aperture for a given flash-to-

subject distance. Once set, the exposure will remain the 

same as long as the distance and flash power level remain 

the same.

1.  Press the camera Menu button*.

2.  Select the first Shooting Menu (first camera icon on the 

left).

3.  Select [Flash control] or [External Speedlite control].

4.  Select [External flash func. setting]. Press Set.

5.  Scroll down to Manual flash. Press Set.

6.  Select Flash output. Press Set.

7.  Select the flash output you want. Press Set.

The “Slave” function allows the flash to be triggered 

wirelessly when used off-camera with an EOS DSLR or 

Speedlite with master flash function. The slave flash must 

be positioned off-camera and must be within a range of 33 

feet (10 meters) from the master flash unit.
The 320EX can be assigned to any one of four channels 

and three groups. The channel setting (1, 2, 3 or 4) must 

match the channel setting on the camera or master unit. 

The group setting (A, B or C) is important only if you 

are using more than one Speedlite, in which case you 

must assign them to the same group if you want equally 

distributed output or different groups if you want unequally 

distributed (ratio) output.
1.  Set the camera, ST-E2 transmitter or 580EX II 

Speedlite as the master unit.

2.  Set the 320EX as the slave unit by moving the power 

switch to <SLAVE>.

3.  Set the transmission channel to the same channel as 

the master unit.

4.  Set the firing group (if using more than one slave).
5.  Attach the 320EX to the mini-stand (provided with 

the flash case) and position the flash. When outdoors 

you must have the wireless sensor aimed toward the 

master unit. When indoors the sensor will usually 

react to reflections from nearby walls.

6.  Release the shutter.

The flash release function uses the 320EX’s built-in 

infrared transmitter to trigger compatible cameras* with a 

2-second delay. You can choose whether to use the 320EX 

as a wireless trigger only or whether to also use it as a 

wirelessly triggered slave flash.  
To trigger camera only:
1.  Set the camera to Remote/Self-Timer mode.
2.  Set the 320EX power switch to <ON>
3.  Point the remote control transmitter on the front of 

the 320EX toward the camera, then press the remote 

release button. The shutter will release two seconds 

later. The 320EX will not fire.

To trigger camera + wireless flash:
1.  The camera must have a "master unit" triggering 

device for Wireless E-TTL flash mounted and active..

2.  Set the 320EX power switch to <SLAVE>.
4.  Set the camera to Remote/Self-Timer mode.
3.  Point the remote control transmitter toward the front of 

the camera, then press the remote release button. The 

camera will fire two seconds later, which allows time 

to reposition the 320EX to illuminate the subject. The 

master flash will trigger the 320EX you’re holding.

The 320EX will automatically shut off after 90 seconds of 

idle use to save battery power. Press the camera’s shutter 

button to turn the unit on again. When using the 320EX as 

a wireless slave you may wish to cancel the auto power off 

function by pressing the [✻] button on your camera. 

To facilitate autofocus for dark scenes, the flash may fire 

repeatedly when you press the camera’s shutter button 

halfway. Its maximum AF-Assist range is approximately 

2.3 - 13.1 ft., depending on the ISO setting and maximum 

aperture of your lens.

1 – 6.9 m 

3.3 – 22.6 ft

1 – 4.3 m 

3.3 – 14.1 ft

—

1 – 5.7 m 

3.3 – 18.7 ft

1 – 9.7 m 

3.3 – 31.8 ft

1 – 6.1 m 

3.3 – 20 ft

—

1 – 8.1 m 

3.3 – 26.6 ft

1 – 13.7 m 

3.3 – 44.9 ft

1 – 8.6 m 

3.3 – 28.2 ft

—

1 – 11.4 m 

3.3 – 37.4 ft

1.2 – 19.4 m 

3.9 – 63.6 ft

1 – 12.1 m 

3.3 – 39.7 ft

—

1 – 16.2 m 

3.3 – 53.1 ft

1.7 – 27.4 m 

5.6 – 89.9 ft

1 – 17.1 m 

3.3 – 56.1 ft

—

1 – 22.9 m 

3.3 – 75.1 ft