Center Lock-On Af - Sony DSCHX80/B-AC Manual

Menu item details
Wide:
Focuses automatically on a subject in all ranges of the image.
When you press the shutter button halfway down in still image shooting mode, a green frame
is displayed around the area that is in focus.
Center:
Focuses automatically on a subject in the center of the image. When used together with the
AF lock function, you can compose the image you want.
Flexible Spot:
Allows you to move the AF range frame to the desired point on the screen and focus on an
extremely small subject in a narrow area.
On the Flexible Spot shooting screen, you can change the size of the AF range finder frame
by rotating the control wheel.
Expand Flexible Spot:
If the product fails to focus on the single selected point, it uses the focus points around the
flexible spot as the second priority area to achieve focus.
[54] How to Use

Center Lock-on AF

When you press the center button, the camera detects the subject positioned in the center of
the screen and continues to track the subject.
1. MENU →
2. Align the target frame (A) over the subject and press
wheel.
Press again to stop tracking.
If the camera loses track of the subject, it can detect when the subject reappears on
the monitor and resume tracking.
Using shooting functions
(Camera Settings) → [Center Lock-on AF] → [On]
Adjusting the focus
in the center of the control