Are you sure you want to do this?



Who should we e-mail when a
Einstein E640 Studio Flash Unit
becomes available?

Want to add more than this item? Head to our waitlist builder


Einstein E640 Studio Flash Unit

Gear Arrives On
Ships Back On
? ? ?
? ? ?

4 Day Rental Price:



*up to 2nd day air - overnight available

The Einstein E640 is Paul C. Buff’s top-of-the-line monolight strobe. Key features include:

  • Dedicated function and adjust buttons

  • 9 f-stop power variability

  • Two unique operation modes

  • High-quality build

Precision Controls. The Einstein E640 features all-digital control from a 2.4-inch high-resolution LCD. Gone are the days of the slider-bar. The dedicated function and adjust buttons afford you precise, 1/10 f-stop control.

Power Variability. This unit offers a welcomed 9 f-stop power variability that allows light adjustment from 640 w/s all the way down to 2.5 w/s. It has a quick recycle time of 1.7 seconds at full power, and dramatically increases recycle as power decreases.

Two Operation Modes. There are two operation modes that allow you to control what’s most important based on what you’re shooting. In Action Mode, the flash duration is minimized for maximum action-stopping capability where absolute color consistency is secondary to motion freezing. In Constant Color Mode, the emitted color temperature is held constant at 5600ºK (+/- 50ºK at any power setting or input voltage) and the flash duration fluctuates.

High-Quality Build. The frosted dome cover reduces UV emissions while protecting the bright, voltage-controlled 150 Watt modeling lamp and UV-coated, single ring flash tube. The strobe features both audible and visual recycle indicator alert options for shooting away from the unit. The built-in fan allows for cooling the unit during heavy use. It has a standard 1/8-inch sync-port and is fully compatible with all our AlienBees modifier accessories.

Mount it on a light stand and you'll be good to go!

Angle of Light

80 Degree


Paul C. Buff

Built-In Radio Range


Built-In Sensor


Color Shift

+/- 50k

Color Temperature



7" height x 5.4" width x 7.8" length

Item Type


Lighting Type

Strobe Lighting

Modeling Output



Universal up to 5/8"

Power Cord

15’ Detachable

Recycle Time

1.7 second (Full Power)


7" Field Reflector

Stop Adjustment

9 Stop

Strobe Output


Sync Cord

15’ Mini Phono to PC

Sync Input

1/8" Mini Phono

Sync Speed

Variable, based on Mode

Sync Voltage



4lbs 5oz

Einstein E640 Studio Flash Unit

AlienBees Reflector

AlienBees Cap for B800 & B1600 & Einstein

Case - PCB Single Light

Charger - 3 Prong Down-Angle Power Cord 15ft

Strobe Trigger - PC to Mini 1/8" 15ft