Adjusting The Back Focus - JVC LST0450-001B Instructions Manual

Setup

Adjusting the back focus

This camera is adjusted to a optimum wide range for CS-mount lens before
shipment but readjustment is required when using zoom lens or C-mount lens
or when the lens focus ring is out of focus. Use the following methods to adjust
the back focus.
Back focus adjustment ring
Loosen
Lens focus ring
26
Tighten
Back focus fastening screw (M2.6)