The claim captures the usual engineering distinction. Many piezo motors can hold position off power through frictional or self-locking mechanics, whereas standard voice-coil motors are back-drivable and typically need continuous current to hold force or maintain position under load. The caveat is that this is not universal: some piezo-based actuators are not mechanically self-locking, and specialized VCM systems can achieve zero holding current with added design features.

The claim accurately describes the usual behavior of commercial autofocus actuators. Piezoelectric autofocus motors commonly hold position without continuous power because many are self-locking, while standard VCM autofocus modules usually need current to stay at a non-rest position. The key caveat is that specialized VCM designs with zero holding current do exist, so the contrast is not universal.