Sony a7CR Help Manual page 70

Help Guide
Interchangeable Lens Digital Camera
ILCE-7CR
α7CR
AF-ON button
You can use the AF-ON button to adjust the focus without pressing the shutter button halfway down ([AF On] function) in
the following cases:
When you want to focus at a specific shooting distance predicting the position of the subject.
When you want to focus and release the shutter separately.
Hint
[Tracking On + AF On] is assigned in the default settings.
Related Topic
AF On
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