Sony ILCA-99M2 - Manual (Page 61)

To shoot images with the focus locked on the desired subject (Focus-lock)
Shoots images with the focus locked on the desired subject in auto focus mode.
Turn the mode dial while pressing the mode dial lock release button in the center of the
mode dial.
Adjust the monitor angle, and hold the camera. Or look through the viewfinder and
hold the camera. 2
When a zoom lens is mounted, enlarge images by rotating the zoom ring. 3
Press the shutter button halfway down to focus.
When the image is in focus, a beep sounds and the indicator (such as ) lights up.
4
Press the shutter button fully down. 5
MENU
→
(Camera Settings1)
→ [Focus Mode] → [Single-shot AF] or [Automatic AF].
1.
Place the subject within the AF area and press the shutter button halfway down.
The focus is locked.
2.