To be completely fair here, so could most focal plane shutters of the era. Electronic flash hadn't really become a thing yet -- it was expensive, inefficient, f

To be completely fair here, so could most focal plane shutters of the era. Electronic flash hadn't really become a thing yet -- it was expensive, inefficient, fragile and finicky -- and focal plane flash bulbs would let you "sync" at practically any speed due to their long burn time.