dmward wrote:
Presuming that the shutter curtain travel is approximately the same speed as the sync speed, it would mean that the strobing would have to be kept up for 1/200 second. So, if the E640 could deliver 20 strobing pulses in that time it would require that each pulse is approximately 1/4000 of a second. The question becomes what would the effective Ws output be and how uniform the light would over that range. Or would it deplete the stored energy in the unit.
Einstein can do this, internally, fairly easily, but not externally via sync jack or transceiver. But to do it right the pulse width would have to be controlled over time so the light level is the same at the beginning and end of shutter travel. It's a big research project to get it right . . . done wrong you would also have a color balance issue from one end of the shutter travel to the end. So no quick answers from me today.