The manual says: "The H System's central lens shutter allows flash sync at all shutter speeds, enabling use of flash in all lighting conditions."

My question is, are there electronic flashes with longer durations?

The reason for this question is that I have been looking at the works of O. Winston Link, a 1950s photographer of, among other things, steam trains at night. Link used huge batteries of connected flash bulbs and 5x4" and med format to shoot iconic images.

I had just assumed (yes, I know that makes an *** out of me and U) his effects could not be reproduced with modern flash, but I have been told there are electronic flash units that give a longer 'burn' by doing a repeating strobe effect rather than just one flash.

Does anyone know anything about such flash units?