Samsung PRO4831 User Manual (en)

Changing the camera’s focus
Shooting options
Using One Touch Shot
You can capture a photo with the touch of your finger. As you touch on a subject, 
the camera focuses on the subject automatically and captures a photo. 
In Shooting mode, press [m].
Select Touch AF “ One touch shot.
Touch the subject to capture a photo.
If you use this function, you cannot set Timer, Intelli zoom, and Burst options.