Please go to Setting>Camera>Conditions>Conditions>Zoom and focus, and set the parameter
To adjust the image size by pressing“+”、“-”in Zoom and Focus, you can set each step width in Speed.
“Speed”is for the width of each movement.
Click “Auto Focus”，device will format a clear image automatically, but other operation is not allowed during this process.
Click “Restore all” and it will clear all configurations to default.
Click “Refresh”and device will auto sync the parameter for Zoom and Focus to default.