Setting Manual Flash and Stroboscopic Flash with the Slave 
Manual flash or stroboscopic flash can be set manually with the slave unit. As with studio flash units, you can set the flash output individually with the slave units for wireless or manual flash.
Manual Flash
Hold down the <D> button for 2 sec. or more.
X <q> will blink.
Set the manual flash output (p.22).
Stroboscopic Flash
Hold down the <D> button for 2 sec. or more.
X <q> will blink.
Press the <D> button again and <p> will blink.
Set the stroboscopic flash (p.24).
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