One of the most important reasons you need to understand the color temperature chart is when you are white balancing your camera. While many cameras have an automatic white balance feature, the best shots are captured by cinematographers who set all the levels of the camera manually. Therefore, to help become one of the better videographers working, it is important to understand the color temperature chart and how it effects white balancing.
The purpose of white balancing is to make sure that the image contains equal amounts of red, green and blue. The automatic white balance cameras use color temperature settings, signifying daylight, tungsten and flash. However, you will always obtain better results when you use the proper white balance setting based on the current light color temperature.
Many cameras allow you to input specific Kelvin temperatures, which come in handy when shooting in the shade. While sometimes the camera sets to a generic shade mode, there are various levels of the darkness of the shade and it might be better for you to understand the Kelvin numbers so you can set it to a precise number to get the best shot possible.
This also makes it possible for you to manipulate your shots. If you are shooting outdoors in normal daylight conditions, you can trick your camera into shooting in a Kelvin level for shade balance, giving the shot more warmth than you would get from shooting in normal 6000K. You can also change the Kelvin level in the opposite direction, changing it to shoot like you were indoors, which will add more blue to the shot.