Understanding HyperSync and High Speed Sync
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Factors to consider
There are many factors that may impact HyperSync performance.
Flash Duration
• Flash duration is a critical factor in HyperSync performance. The flash duration is the length of time from when
your flashtube is first energized to when it is no longer emitting energy. Longer flash durations are better. You
may want to compare t.5 times from flash manufacturers to see how long or short your flash is compared to
others.
Difference Flash Duration Makes With Otherwise Matching Equipment
Power Level
• Flash duration is a critical factor in HyperSync performance. The flash duration is the length of time from when
your flashtube is first energized to when it is no longer emitting energy. Longer flash durations are better. You
may want to compare t.5 times from flash manufacturers to see how long or short your flash is compared to
others.
Difference Power Level has on Flash Duration
Ranger RX S Head Flash Duration Shape - Lowest Power
Use with IGBT-controlled strobes
• A Speedlight, Einstein E640, or other IGBT-controlled flash will need to be used at full power with HyperSync.
Power levels less than full will result in clipping at the top and bottom due to the way IGBT-controlled flashes
adjust flash duration for power control.
To read more about how IGBT-controlled flashes differ from other types of flashes, see the IGBT-controlled flashes
vs. Voltage-controlled flashes page.
IGBT-controlled flash at 1/1 power and 1/2 power
Einstein E640 Flash Duration Shape t.5=1/2000th
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