2. Two cross-brand high-speed sync modes:
Normal HSS
and
Power Sync;
- Normal HSS supports shutter speeds up to 1/8000s;
- Power Sync boosts flash contribution above x-sync shutter;
3.
Rear curtain sync
and
slow sync
supported;
4.
Multi-master
supports up to 16 photographers firing the same set of flashes at
their own power setting;
5.
AF-assist LED
illuminates focusing blind spot when needed;
6.
Flash specific profiles
with calibrated power levels for many current and previous
flash models;
7.
User calibration
of flash profiles to ensure accurate power output;
8.
Lo Power
mode fires the flash for extremely short lengths of time;
9.
Absolute Power
mode benchmarks the power output of different flash models to
the same light intensity;
10.
TTL pass-through
with Canon, Nikon, Fujifilm, Olympus, Panasonic and Pentax via
one single unit;
11.
Group control
allows you to control up to four groups;
12.
Relay mode
triggers the camera shutter and flash in sync;
13.
Delay mode
is configurable from 1 millisecond to 999 seconds;
14.
Mini-USB
port for optional power supply and firmware update;
1.2 HSS and Power Sync Capabilities
Most cameras supports normal flash sync up to its x-synchronization shutter speed
(commonly between 1/160 seconds and 1/250 seconds). Beyond this shutter speed,
the cameras and the system flashes will behave differently. The high-speed sync,
which is also known as the HSS or FP sync, has to be enabled on the system flash in
order to synchronize the flash light with the camera beyond the x-sync shutter.
Cactus V6 II supports cross-brand high-speed sync in two ways:
1.
Normal HSS
: It supports the HSS or FP sync capabilities of the system flashes.
While it allows user to adjust power levels, the flash exposure is much lower than
the normal flash sync.
2.
Power Sync
: It syncs with the full power flash pulse without compromises on the
flash exposure. While it does not allow power level adjustment, the flash
exposure is much higher than the normal HSS mode.
1.3 Auto and Model-Specific Flash Profiles
