Samsung PRO4831 User Manual (en)

Adjusting brightness and color
Shooting options
Defining your own White Balance
You can customize the White Balance by capturing a photo of a white surface, such 
as a piece of paper, under the lighting conditions in which you intend to capture a 
photo. The White Balance feature will help you to match the colors in your photo 
with the actual scene.
In Shooting mode, press [m].
Select White Balance “ Custom Set.
Aim the lens at a piece of white paper, and then press [Shutter].