Sony A7RIII ILCE-7RM3A Operating Instructions Manual page 181

Help Guide
Interchangeable Lens Digital Camera
ILCE-7RM3A
α7RIII
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.
MENU → (Camera Settings1) → [
1
Menu item details
On:
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.
Useful method to micro-adjust the focus
When an A-mount lens is attached, activating the auto focus function with a button other than the shutter button lets you
focus more precisely in combination with manual focusing.
1.
Set [ AF w/ shutter] to [Off].
2.
MENU → (Camera Settings2) → [
functions to the desired keys.
3.
Set [ Eye-Start AF] to [Off] to avoid auto focusing when you look through the viewfinder.
4.
Press the AF-ON button to focus.
5.
Press the key to which the [Focus Magnifier] function is assigned, and then rotate the focus ring for micro-
adjustments of the focus.
6.
Press the shutter button fully down to shoot the image.
Related Topic
AF On
Eye-Start AF (still image)
Pre-AF (still image)
Focus Magnifier
AF w/ shutter] → desired setting.
Custom Key] or [
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Custom Key] → assign the [Focus Magnifier]