Sony ILCE-7 How To Use Manual page 69

On (default setting):
Adjusts focus before you press the shutter button halfway down.
Off:
Does not adjust focus before you press the shutter button halfway down.
Note
[ Pre-AF] is available only when an E-mount lens is mounted.
[58] Using shooting functions > Adjusting the focus
Eye-Start AF (still image)
Sets whether or not to use autofocus when you look through an Electronic Viewfinder.
1. MENU → (Custom Settings) → [
Menu item details
On:
Auto focusing starts when you look through the Electronic Viewfinder.
Off (default setting):
Auto focusing does not start when you look through the Electronic Viewfinder.
Hint
[ Eye-Start AF] is available when an A-mount lens and a Mount Adaptor (LA-EA2, LA-
EA4) (sold separately) are attached.
[59] Using shooting functions > Adjusting the focus
AF/MF control
You can easily switch the focusing mode from auto to manual and vice versa while shooting
without changing your holding position.
1. Switch the AF/MF/AEL switch lever to the AF/MF position, then press the AF/MF button.
Eye-Start AF] → desired setting