Samsung Digital Camera User Manual (en)

Shooting options
Changing the camera’s focus
If you do not touch any area on the screen, the focus frame will 
appear in the center of the screen.
Tracking a subject may fail when:
The subject is too small or the subject moves excessively.
The subject is backlit or you are shooting in a dark place.
Colors or patterns on the subject and the background are the 
The camera shakes excessively.
    In these cases, the focus frame will appear as a white single-line 
If the camera fails to track the subject, you must reselect the subject 
to track. 
If the camera fails to fix the focus, the focus frame will change to a red 
single-line frame.
If you use this function, you cannot set face detection, photo style 
options, and smart filter effects.
Using smart touch focus
Smart Touch AF allows you to track and auto focus on your 
subject, even when you are moving.
In Shooting mode, select 
f “   “  .
Touch the subject you want to track in the touch area 
(indicated by a frame).
A focus frame will appear on the subject and will follow the 
subject as you move the camera.
The white frame means that your camera is tracking the 
The green frame means that your subject is in focus when you 
half-press [Shutter].
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