Sony a7CR Help Manual page 185

Help Guide
Interchangeable Lens Digital Camera
ILCE-7CR
α7CR
Pre-AF
The product automatically adjusts focus before you press the shutter button halfway down.
MENU → (Focus) → [AF/MF] → [Pre-AF] → desired setting.
1
Menu item details
On:
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.
During focusing operations, the screen may shake.
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TP1001150386