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Review Summary
Profoto flash B2 flash head
250
9 f/stops 1.0-250 Ws
Asymmetrical/Symmetrical
Increments: full stops or 1/10 stops
Li-Ion
215 Full-power flashes
Recharge: 45-60 min
0.03 - 1.35 Seconds
1/1,000 - 1/15,000 Sec
LED: 50W halogen-equivalent
Modes: Constant on (via user-determined timer 1-30 sec)
Off, Dim on/off while recycling, full on when recycled
2
Sync socket: mini-pin Photocell/IR-slave
Integrated Profoto AirTTL transceiver
Transmitter: optional Air Sync, Air Remote, Air Remote TTL-C/N
Radio range: 330' (100m) in TTL, 1,000' (300m) non-TTL
Digital LED: 1.75 x 2.25" (44 x 57mm)
No
Switchable beep and/or modeling light dim
Yes
100 - 240 VAC, 50/60 Hz charger
With Battery: 6.3 x 3.1 x 6.7" (16.00 x 7.87 x 17.02cm) (Battery Not Included)
With Battery: 2.2 lbs (1.00kg) (Battery Not Included)

Profoto has just announced the successor to their highly successful B1 Off Camera Flash system, the B2. When Profoto showed us the pre-production model of the B2 last month, I was truly excited, not just because the Profoto B2 is a powerful (250Ws) and lightweight (less than 4 lbs) AirTTL flash s...
To shoot with the Profoto B2 is to shoot with all options at hand. Put the head on a bracket on your camera, the pack on your belt and stay moving. Or put everything on a stand and go off-camera. Shoot with TTL. Or shoot in Hybrid Mode and switch from TTL to manual control with the settings intact. Use it as a subtle fill light. Or crank up the power and take full control of the ambient light. Connect one or two flash heads. Use only the B2. Or sync it with one or several other B1 Off-Camera Flashes. Shoot with a bare head. Or choose from the widest assortment of Light Shaping Tools available and shape the B2's already beautiful light into any light you can imagine.