Since ordinary slave units will not work with most digital cameras (because these cameras use a very rapid series of pre-flashes, that trigger the slave prematurely), Wein is now offering the Digital line of slaves. Typical slave units will fire on the first pre-flash they sense, but the digital camera will capture the image on the last flash. The Wein digital slave units are specially designed to only be triggered by the correct flash sensed by their built-in optical sensor and circuitry, thus solving the digital camera flash problem.
Attach this slave directly to foot of any shoe-mount flash for direct connection, or connect a standard PC cord to the side mounted PC terminal.
Compatible with Shoe-Mounted Preflash Systems
Properly synchronizes from shoe-mounted preflash-TTL Canon/Nikon/Olympus/Pentax/Sony flashes-what you attach to this slave will emit its light properly to appear in the exposure. This slave will not fire from flashes if they're in "A" or "M" exposure modes (modes w/o preflashes).
Note:
Although Nikon i-TTL system flashes can properly trigger a generic hot flash attached to this slave, an attached modern Nikon system flash will not fire.
Partially-Compatible with Built-In Flashes
The Wein digital hot shoe slave properly synchronizes with Canon & Pentax built-in TTL flashes, but will not fire properly from the built-in flashes on the Nikon, Olympus or Sony digital systems.
Built-in ambient light filter for outdoor use
Constructed of aircraft aluminum and solid epoxy; virtually indestructible
Integral 1/4"-20 threaded socket for tripod, monopod or light stand mounting
PC terminal for use with non-shoe flash units