Paul C. Buff, Inc. Technical Forum

When trying to shoot long exposures with my Cybersync I get the initial flash and maybe 5-10 seconds later I get another flash thats triggered by the cybersync and then another flash at about the same interval. Any idea as to why this is happening? My camera settings are 30 sec. exposure, ISO 200, f/18 on a D300s. I have been forced to unplug the power from my Alien bees so that I would not get the second and third flashes.

If the circuit remains closed (by cord, foot, or button) the CST will trigger once every 9 seconds or so. If it is of a static subject (i.e. it doesn't matter when the lights fire) then it may be easier to pop the lights manually via the CST in hand. Also, Cyber Commander does not exhibit this.