Ever wondered why your subjects turn out yellow when photographing them in indoor environments? Or why your camera flash can make them appear blue? Thoroughly understanding the concept of white balance and how it works is very important in digital photography, because setting it incorrectly could ruin a picture, adding all kinds of unwanted color casts and causing skin tones to look very unnatural. In this article, I will explain how you can adjust it on your camera or post-production to get accurate colors.
1) Definition of White Balance
Simply put, white balance in digital photography means adjusting colors so that the image looks more natural. We go through the process of adjusting colors to primarily get rid of color casts, in order to match the picture with what we saw when we took it. Why do we have to do this? Because most light sources (the sun, light bulbs, flashlights, etc) do not emit purely white color and have a certain “color temperature“. The human brain processes the information that comes from our eyes and automatically adjusts the color temperature, so we normally see the colors correctly. If you took a white sheet of paper and looked at it outside, it would most likely look as white as if you were to look at it indoors. What most people do not realize, however, is that there is a huge difference in color temperature between bright sunlight and indoors tungsten light.