Zero-based photography, what are color temperature and white balance?

Zero-based photography, what are color temperature and white balance?

colour temperature

What is color temperature?

Color temperature refers to the temperature of light. Colors such as yellow, red and orange are classified as warm tones, while colors such as white, blue and cyan are classified as cool tones. The unit of measurement of color temperature is Kelvin, which means "K". The higher the color temperature, the bluer the light color; The lower the color temperature, the yellowish red.

Changing from black to red, yellow and white and finally emitting blue light is the color temperature change of the light source.

Variation law of color temperature k value

The higher the color temperature, the colder (blue) the color emitted by the light source. The lower the color temperature, the warmer (red) the color emitted by the light source.

Color temperature: 3000K, 4000K, 5000K, 6000K, 7000K, 8000K.

white balance

What is white balance?

White balance literally means white balance. No matter what light source, white objects can be restored to white. The unit of white balance is also k, and the white balance is represented by AWB in the camera.

Variation law of white balance k

The larger the white balance k, the yellower the picture and the warmer the tone (cold and sad). The smaller the white balance k, the bluer the picture and the colder the color tone (warm and peaceful).

White balance: 3000K, 4000K, 5000K, 6000K, 7000K, 8000K.

Relationship between color temperature and white balance

Conceptually:

Color temperature and white balance are completely different concepts. White balance is an extension of the photographer's expression of light problems in photography. However, because the white balance adjustment process is realized by adjusting the color temperature, the color temperature is a white balance problem relative to the camera.

In the law of change:

The change law of color temperature and balance is completely opposite. The greater the color temperature, the colder the photo (blue), and the smaller the white color, the colder the photo.

How to use white balance

When we want to take warm (yellowish) photos, improve the white balance K value. When we want to take a cool (blue) photo, lower the white balance K value.

1.AWB mode

That is, the camera automatically adjusts the white balance according to the ambient light source, which is suitable for use in a single light source environment.

2. Scene mode

If you don't know the color temperature of the environment, just choose the scene directly. Cloudy option means cloudy environment, sunshine icon means sunny day, light bulb icon means incandescent light environment and so on.

3.k mode

In the case of complex light source, you need to set the white balance manually. You can choose the preset white balance mode or manually adjust the white balance K value to the color you want.