6
Using the Flash
M Mode: Manual Mode
S1: Slave Triggering Mode
Power Management 
Flash Output
On/Off Power Switch (19) controls the on-and-off of the Flash Unit. 
Turn off the Battery Pack if the Flash Unit will not be used for an 
extended period.
Flash output can be varied from 1/128th to 1/1 full power in 1/3-stop 
increments. To obtain a correct flash exposure, use a hand-held flash meter 
to determine the required flash output.
Adjust the power output by rotating the Select Dial (21). The following table 
makes it easier to see how the stop changes in terms of f/stop when you 
increase or decrease the flash output:
  1/1  1/1-0.3   1/1-0.7  1/2  1/2-0.3   1/2-0.7  1/4 … OF 
 1/2+0.7  1/2+0.3   1/4+0.7  1/4+0.3   …  
Figures displayed when reducing flash output level >
< Figures displayed when increasing flash output level
When “OF” is displayed, it means the flash is turned off and there is no flash output.
Press Mode Selection Button (17) to enter M mode. In this mode, you 
can set the flash unit onto your camera’s hot shoe or your trigger hot 
shoe for firing. Before shooting, adjust the power output. When the 
camera’s shutter is pressed, the flash will fire. Slave-triggering mode is 
not available in M mode.
Press Mode Selection Button (17) to enter S1 mode. In this mode, the 
flash unit can function as a slave flash for creating multiple-lighting 
effects. It is respectively applicable to manual flash environment.
In S1 mode, the flash unit will fire synchronously when the master flash 
fires, the same effect as that by the use of radio triggers.