White balance is adjusting colors to match the color of the light source so that white objects appear white. When the different light sources like sunlight, bulbs, fluorescent hit the subjects may reflect different colors than it supposed to. Despite the fact that these various light sources look colorless to the human eye, they really release light in a variety of colors. The image sensor of a digital camera will represent these color variations just as they are, with the consequence that without extra processing the color of the shot will appear to change according to the light source. For example, photos shot under incandescent lamps are automatically made bluer to correct the reddish color that comes with this sort of illumination, thanks to auto white balance. White balance provides you to adjust colors so that the image looks more natural. Adjusting white balance is very simple with any kind of photo editor software, but also you can do it in your camera settings manually with choosing some features as auto white balance, daylight, cloudy, etc.