Hss - Profoto B2 250 AirTTL User Manual

When the B2 is operated together with any of the optional Profoto Air Remote TTL
transceivers in TTL mode, a TTL supported camera controls the light output for correct
exposure by changing the energy level setting of the B2. If the camera requires an output
outside the range of the B2, the B2 will beep to indicate this.
The automatic flash exposure indicator [22] 'AUTO' is lit every time the flash output is set
automatically by the camera. The indicator is lit for fifteen seconds after receiving a TTL
flash command from the remote.

HSS

Profoto B2 supports HSS - High Speed Sync with the optional Air Remote TTL enabling
shutter time faster than the fastest x-sync of the camera. For compatible cameras, visit
15
Profoto.com.
During a HSS flash, the flash is pulsing to get a constant light output during the time when
the shutter is open. HSS can for example be used to limit the influence of ambient light in
bright conditions or to freeze action.
Note that frequent use of HSS will have an impact on the life-time of the B2 flash tube.
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