That $199 dual follow focus S3 with both A/B hard and soft stops from Lensse…
Well feast:
Lensse S3 Follow Focus Product Features
Double Hand Precious Focusing
Left or Right Hand Usage
Work With Follow Focus Assistance on Left or Right Side
Removable Hand Wheels ( Left and Right )
Profesional Look
A/B Hard Stops
Changeable Hand Wheels
Computer-aided light smart and user friendly design
Precision engineering and manufacturing
All Parts Produced by CNC Milling
Dual Hand Wheels
Removable Hand Wheels ( Left and Right )
Manual Soft Stop
Positional Indicator
Compatible with all DSLR
Compatible with 15mm rig systems
Aliminium CNC strudy construction
Easy of Use
Standard 0.8 module gear and can be attached back or front
Black anodisied color
For more: Lensse.