Samsung dv150 User Manual (en)

Basic functions
       Preventing your subject from being out of focus
It may be difficult to get your subject in focus when:
- there is little contrast between the subject and background (for example, when 
your subject is wearing clothing that is similar in color to the background)
- the light source behind the subject is too bright
- the subject is shiny or reflective
- the subject includes horizontal patterns, such as blinds
- the subject is not positioned in the center of the frame
•  When you capture photos in low light
Turn on the flash.  
(p. 67)
•  When subjects are moving rapidly
Use the Continuous 
or Motion Capture 
function. (p. 79)
Using the focus lock
Half-press [Shutter] to focus. When the subject is in focus, you can 
reposition the frame to change the composition. When you are ready, 
press [Shutter] to capture your photo.