Samsung PRO4831 User Manual (en)

Using the Smart Auto mode
Extended functions
Half-press [Shutter] to focus.
Press [Shutter] to capture the photo.
If the camera does not recognize an appropriate scene mode, it uses the default 
settings for the Smart Auto mode.
Even if it detects a face, the camera may not select a portrait mode depending 
on the subject's position or lighting.
The camera may not select the correct scene depending on the shooting 
conditions, such as camera shake, lighting, or distance to the subject.
Even if you use a tripod, the camera may not detect the 
 mode if the subject 
is moving.
The camera consumes more battery power, because it changes settings often to 
select appropriate scenes.