Cactus V6 IIs User Manual page 24

To this end, the V6 IIs will command the remote flashes to fire either flashes with an
extended duration or a full power normal flash to produce even frame illumination at
shutter speeds as high as 1/8000 second.
Tip: HSS flash is commonly used outdoor, especially in sunlight. The faster shutter
speed supported by HSS flash allows you to use a wider aperture to achieve
shallower depth of field while maintaining correct exposure.
13.1 Normal HSS
When the shutter speed of the camera exceeds its x-sync speed, the normal HSS
setting of the V6 IIs would command the remote flashes to fire continuous and
constant flash pulse for the full duration between the first curtain opening and
second curtain closing when the shutter speed of the camera exceeds the x-sync
speed. In some camera systems, it is also known as focal plane or FP flash.
To command the flash units to fire the HSS flash when your camera shutter speed
exceeds the x-sync speed:
1. Switch the V6 IIs TX to the normal HSS mode. On the V6 IIs TX, press
the selection dial to <HIGH SPEED SYNC> and press
to <NORMAL HSS> and press
icon (ILLUSTRATION OF HSS ICON) would be shown.
2. Turn on the HSS flash option on the flash units.
Note: The continuous light output of normal HSS flash does not freeze a moving
object as a normal flash would do. Instead, it will cause motion blur, much like a
continuous light source would. In order to freeze motion in normal HSS flash, you
need to use high shutter speeds.
13.2 Power Sync
As an alternative to the normal HSS, the Power Sync of the V6 IIs syncs with the full
power flash of the remote flashes. Power Sync yields a much higher exposure than
the normal HSS flash.
To command the flash units to Power Sync when the camera shutter speed exceeds
the x-sync speed:
1. Switch the V6 IIs TX to the normal HSS mode. On the V6 II TX, press
selection dial to <HIGH SPEED SYNC> and press
. On the status screen of the LCD screen, the HSS
. Turn the selection dial to
. Turn
. Turn the selection dial
. Turn the