Why steeper motors? They are extremely quiet, and when geared are extremely smooth and accurate. Our system has the full range of movement broken down into 4096 precise locations. RC servos only move 180 degrees at most and need a large gear to get full range of focus movement. Not steppers, they go continuous. And with our spring loaded system there is always the correct gear meshing.
Though steppers do not know where they are, they know how far they have moved. Match that to our digital control and you have very accurate possitioning, quietly and smoothly.
