Hydraulic actuation dates back to the start of the industrial revolution however more demanding applications such as large aircraft has necessitated the shift to a more efficient method of displacing mechanical parts.
Electrical actuation offers less maintenance, higher effiency, higher reliability and so much more. Add electronics and the control becomes infinately variable with accuracy and resolution.
Have you ever wondered how AI software can find a virus or some shape under a microscope….electric actuation for the zoom and tilt actuation. Mass surveilance closed circuit video works exactly on the same principles.