Nearly all camera shutters are "spring driven" and have been for almost two hundred years... ??? On most cameras, the action of the film transport also tensions the shutter main spring; older cameras and view cameras with mechanically timed shutters have a specific shutter cocking lever to tension the shutter main spring.
What has changed on modern shutters is that the shutter's timing mechanism is more usually controlled by electronic means, but this does not change the fact that the shutter is "spring-driven" ...
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