The Sunpak DF4000U flash is the perfect accessory for today’s digital SLR cameras. The DF4000U is designed to use one flash for both Canon and Nikon cameras, and is compatible with the latest Canon and Nikon DSLR and HDSLR cameras, and can be powered by 4-AA batteries or high voltage power pack.

The DF4000 has many advanced features, such as automatic zoom head from 28mm to 180mm, built-in wide angle panel and bounce card, as well as a built-in slave, which can slave to either a Canon or Nikon system.  It also has an easy-to-use LCD panel.  In low light, the AF assist makes sure you don’t miss the shot when light levels get low.

Powered by 4-AA batteries or optional high voltage power pack, you can get up to 200 full power shots on a set of batteries.    With a metal hot shoe, high guide number of 190/ft. (ISO 100) and power save mode, the DF4000U provides outstanding illumination especially with long lenses. With high power and complete TTL dedication, you will never miss a flash shot again!

Other Features Include:

Power Zoom™ lens control with wide angle diffuser for perfect flash coverage; auto E-TTL and i-TTL detection when mounted on the respective camera; large, easy to read LED display; 4-channel wireless control for multi-flash setups; auto lens focal length setting with override for unique lighting opportunities; includes flash stand and padded flash case; high speed sync, custom functions menu, exposure compensation and built-in sync socket

Catalog number:

DF400U-CN (Canon and Nikon)


Guide Number:190/ft. (58/meters) at ISO 100
Flash Control Mode:E-TTL (Canon) and i-TTL (Nikon)
Flash Coverage:24mm to 180mm
Wireless Range:Indoors: 65 – 98 feet

Outdoors: 32 – 49 feet

Wireless Channels:4 – 1,2,3,4 and 3 unit groups (A.B,C)
Number of Flashes:200 (alkaline batteries)
Recycle Time:0.5 seconds to 8 seconds (AA batteries)
AF Assist Distance:Up to 26 feet
Power Ratio Settings:Full, ½, ¼, 1/8, 1/16, 1/32, 1/64, 1/128
Bounce Angle:-7°, 0°,  45°, 60°, 75°, 90°
Swivel:Up to 180° left; Up to 180° right
External Ports:Flash Stand, Padded Case
Accessories:7.87″ H x 2.95″ W x 2.24″ D
Dimensions:7.87″ H x 2.95″ W x 2.24″ D
Weight:13.2 oz.
Power:4 – AA batteries or high voltage power pack
Warranty:One Year