The Profoto B4 1000 Air is a high-performance, mains-powered flash generator designed specifically for professional photographers who require maximum power, extremely short flash durations, and absolute reliability in the studio or during demanding on-location shoots. It is primarily aimed at high-end fashion, advertising, and action photographers who demand uncompromising control over light and timing.
Core Specifications and Light Performance
- Power: 1000 Ws (watt-seconds), distributed across two asymmetrical outputs
- Power Range: 11 f-stops (adjustable in precise 0.1 increments)
- Flash Duration: Extremely short – up to 1/25,000 s (t0.5) for freezing the fastest motion
- Recycling Time: Up to 20 flashes per second at lower power
- Consistency: Color temperature and light output remain stable across the entire power range
The combination of high power and ultra-short flash duration makes the B4 ideal for high-speed photography, such as splashes, sports, or dynamic motion.
Speed and Precision
- Freeze Mode: Special mode for the shortest possible flash duration – perfect for freezing action
- Burst Capability: High-frequency continuous shooting without power drop
- Precise Control: Digital regulation ensures exact repeatability of lighting setups
- Symmetrical/Asymmetrical Distribution: Flexible power distribution across connected heads
The B4 is designed to deliver millisecond-accurate light control, even under extreme conditions.
Air System and Connectivity
- Integrated Air System: Wireless control and triggering via Profoto Air Remote
- Channels: Multiple channels and groups for complex lighting setups
- Compatibility: Works with the entire Profoto Air ecosystem
This allows seamless integration into existing studio or on-location setups.
Design and Handling
- Control Panel: Intuitive digital interface with clear display of power, mode, and channels
- Connections: Two flash head outputs (e.g., ProHead or ProHead Plus)
- Housing: Robust, industrial-grade design for continuous studio use
- Cooling: Active cooling system for consistent performance during bursts
- Mounting: Designed for studio racks or stationary setups
The B4 is less portable than battery systems but optimized for maximum sustained performance and stability.
Power Supply and Applications
- Power Source: Mains power (no battery)
- Applications: Studio, high-end productions, commercial photography
- Reliability: Built for continuous operation and demanding shoots
Key Features and Target Group
- Extremely short flash durations for high-speed photography
- High repeatability for professional workflows
- Compatible with Profoto light modifiers (softboxes, beauty dishes, etc.)
- Ideal for: fashion, advertising, automotive, and action photography
Conclusion
The Profoto B4 1000 Air is a no-compromise studio flash generator for professionals who demand the highest levels of power, speed, and precision. Compared to battery-powered solutions, it offers superior sustained performance and ultra-short flash durations—perfect for productions where timing and light quality are critical.