On a digital camera, white balance solves the problem of colour casts without the need for the filters that are used with film. There is no such thing as a pure white in the outside world. A building that is painted white, for instance, will change color during the day. As the color of the light bouncing off it changes. If the blue light is hitting it, the wall will photograph as blue. White balance gives you options for correcting color balance for a number of different light sources. Once the camera has established a neutral white all the colors in your pictures will fall into place. And the color…