q: Wireless Multiple Flash Shooting with Manual Flash Output
?: Stroboscopic Flash
Stroboscopic flash is an advanced manual flash shooting method. When using stroboscopic flash with a slow shutter speed, you can shoot multiple successive movements within a single picture, similar to stop- motion pictures.
In stroboscopic flash, set the flash output, number of flashes, and flash frequency (number of flashes per second = Hz). For the maximum number of continuous flashes, see page 37.
1 Set the flash mode to <?>. 
Press the <E> button on the 
master unit and set to <?>.
2 Set the firing groups and the flash output.
Set the number of firing groups and the flash output for each group by referring to the manual flash on the preceding page.
3 Set the flash frequency and the number of flashes.
While <M> is displayed, perform the following procedure.
To set the number of flashes, press function button 2 <Q>, turn <9> and select <8>.
To set the flash frequency, press function button 3 <G>, turn <9> and select <8>.
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