Sony ILCA-77M2 - Manual (Page 72)

You can select the focusing method to suit the movement of the subject.
1. Turn the focus mode dial
(A) to select the desired focus method.
Focus mode details
S (Single-shot AF):
The camera focuses and the focus is locked when you press the shutter button halfway down. Use this
mode when the subject is motionless.
A (Automatic AF) (default setting):
The camera switches between [Single-shot AF] and [Continuous AF] depending on the movement of the
subject.
C (Continuous AF):
The camera continues to focus while the shutter button is pressed and held halfway down. Use this
mode when the subject is in motion.
MF (Manual Focus):
Adjusts the focus manually.
Note
If the subject is too close, the image may show any dust or fingerprints on the lens. Wipe the lens
with a soft cloth, etc.
Once you change the focus method, the set focus distance is erased.
When [Focus Mode] is set to [Continuous AF], the beep does not sound when focus is achieved.
Hint
If you cannot achieve focus for the intended subject using auto focus, select MF or DMF, then shoot
again.
You can select DMF using MENU
→
(Camera Settings
) → [AF-A setup] → [DMF].
[67] How to Use Using shooting functions Adjusting the focus
Focus Area