Panasonic LUMIX DMC-LX100 Operating Instructions For Advanced Features page 134

●
AF Lock only is effective in the following case:
• [Manual Exposure] Mode
●
During Manual Focus, only AE Lock can be used.
●
Only the AF Lock is enabled when you are recording motion pictures. Once you cancel AF Lock
while recording motion pictures, you cannot perform the AF Lock operation again.
●
The subject can be focused again by pressing the shutter button halfway, even when AE is locked.
●
Programme Shift can be set even when AE is locked.
●
Lock is cancelled when a zoom operation is performed after locking the exposure and/or focus.
Perform the locking operation again.
134
Taking pictures by locking the focus and/or exposure [AF/AE Lock]
Adjusting the focus and brightness (exposure)
SQW0038