On Sun, 10 Jan 1999 16:08:22 -0600, "Steve" wrote:

>Does anyone have any experience or know anything about Nikon's new su-4?
>It's supposed to be a infrared, wireless, TTL adapter for several SB
>speedlights. Nikon's web site is extremely sparse on this product. Any
>help or information ( such as how many flashes will the system handle, and
>what about the transmitter) would be greatly appreciated. I'm thinking that
>this would be an incredibly flexible location light set up.

From what I gather, the SU-4 uses the light of the
camera-connected TTL flash for starting and stopping
the SU-4-mounted flash(s). Up to three may be used,
as I recall. Great system, so long as no one else
is using flash nearby...