Panasonic Lumix S1H Handbook page 74

Lens Fn Button Setting
You can allocate the function to the focus button of an interchangeable lens.
• Firmware must be updated to version 2.0 or later.
[ ] > [ ] > [ Lens Fn Button Setting ]
Focus Stop
AF Mode
Focus Ring Lock
AE LOCK
AF LOCK
AF/AE LOCK
AF-ON
AF-ON : Near Shift
AF-ON : Far Shift
Focus Button
7. Video Shooting Assist Functions
AF-Point Scope
Focus Area Set
Image Stabilizer
Preview
Preview Aperture Effect
No Setting
Off (Disable Press and Hold
Restore to Default
74