Description
9 f-stop power variability (2.5 Ws to 640 Ws)
Adjustable in precise 1/10 f-stops
All-digital control from LCD display
Global plug-and-play from 95 to 265 VAC
Action stopping flash durations as short as 1/13,500 sec. (t.1) (1/54000s. (t.5)
Color consistency +/- 50K at any power
Bright, adjustable 250 W modeling lamp
Frosted dome cover reduces UV emission
Audible and visual recycle indicators
Compatible with all BUFF light modifiers, light stands, CyberSync™ remotes, and Vagabond™ systems
2-Year Factory Warranty
For the shipping costs per country see our shipping & Returns page
 
PRODUCT INFORMATION
The Einstein™ Flash Unit features action stopping flash durations, color consistency, and the broadest power range. The flexibility of the power range allows for everything from over-powering the sun, to shooting indoor portraits with a wide-open aperture. 

Perfect for: Professional photographers in any field.
Sync Cord Compatibility: All Paul C. Buff, Inc. flash units arrive with a 15' sync cord for connecting to a camera's PC sync terminal. Not all camera's are equipped with a PC sync terminal. If you plan on using this cable, and not wireless remotes, you may need a hot shoe adapter. Check your camera's compatibility. 
Find out how the Einstein™ compares to our other flash models.

SPECIFICATIONS
Flash Unit
Model: Einstein™ Flash Unit
Wattseconds: 640 Ws
Power Variability: 9 f-stops (full to 1/256 power)
Flash Timing & Performance
Recycle to Full: 1.7 sec
Recycle to Half Power: 1/2000 sec (at full power)
Flash Duration (t.5): 1/2000 sec (at full power)
Flash Duration (t.1):
Action Mode: 1/588 sec (full power) | 1/13,500 sec (1/256 power)
Color Mode: 1/588 sec (full power) | 1/8,000 sec (1/256 power)
Power & Electrical
Power Requirements: Automatic switching 95–265 VAC, 50/60 Hz (no lamp change or user attention required)
Average Current Draw: Brief initial recycle surge of 8.5A; average draw of 8A
Connectivity & Safety
Sync / Trigger Voltage: Less than 5 volts (safe for use with DSLR cameras)
Modeling Lamp & Flashtube
Modeling Lamp: 250 W, 120VAC bayonet-style quartz bulb
Flashtube: 12mm, daylight-balanced and UV-coated
Mounting & Display
Stand Mount: Fits stands up to 5/8 in.
Umbrella Mount: Accepts rods up to 9mm
LCD Display: Back-lit, high-resolution color LCD, 320x240 pixels, 2.4 in
Physical Specs
Weight: 4 lbs. 5 oz. / 1.81 Kg
Dimensions: 17.78 cm (H) x 13.72 cm (D) x 19.81 cm (L)