Af On; Af W/ Shutter (Still Image) - Sony ILCA-77M2 Use Instructions

You cannot set [AF Micro Adj.] individually for a Sony, Minolta, and Konica-Minolta lens of
the same specification.
[84] How to Use

AF w/ shutter (still image)

Selects whether to focus automatically when you press the shutter button halfway down.
Select [Off] to adjust the focus and the exposure separately.
1. MENU → (Custom Settings) → [
Menu item details
On (default setting):
The auto focus operates when you press the shutter button halfway down.
Off:
The auto focus does not operate even if you press the shutter button halfway down.
Hint
When [ AF w/ shutter] is set to [Off], you can still use the [AF On] function.
[85] How to Use

AF On

You can focus using any button instead of pressing the shutter button halfway down. The
settings for the focus mode dial will be applied.
1. Select the desired key and assign the [AF On] function to it using MENU →
(Custom Settings) → [Custom Key Settings].
2. Press the key to which you have assigned the [AF On] function while auto-focus
shooting.
Using shooting functions
Using shooting functions
Adjusting the focus
AF w/ shutter] → desired setting.
Adjusting the focus