Lock-on AF cannot be set when an A-mount lens is attached.
Lock-on AF with A-mount lens
Lock-on AF cannot be used when the Mount Adaptor LA-EA2/LA-EA4 is attached and Eye-Start AF is set to On.
To use Lock-on AF, select MENU -> Setup, and set Eye-Start AF to Off.
Lock-on AF cannot be used when the Mount Adaptor LA-EA2/LA-EA4 is attached and Eye-Start AF is set to On.
To use Lock-on AF, select MENU -> Setup, and set Eye-Start AF to Off.