GE PJ1 User Manual (en)

AF Mode (Auto-Focus mode)
Use this setting to control the auto-focus mechanism while 
taking pictures.
Two options are available:
Single-AF: The focus frame appears in the center of the 
LCD screen to focus on the subject.
Multi-AF: The camera automatically scans the field of 
view in a wide area to find the focus point. 
AF-assist Beam
This option can turn on or turn off AF assist lamp. It can 
strengthen focusing to turn on the AF assist lamp in dark