Sony ILCE-1 a1 Help Manual page 151

Help Guide
Interchangeable Lens Digital Camera
ILCE-1
α1
AF Transition Speed
Sets the speed at which the focus position is moved when the target of the auto focus is switched during movie shooting.
MENU → (Focus) → [AF/MF] → [AF Transition Speed] → desired setting.
1
Menu item details
7 (Fast)/6/5/4/3/2/1 (Slow):
Select a faster value to focus on the subject more quickly.
Select a slower value to focus on the subject more smoothly.
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