Color temperature
Color temperature is a unit of measurement that expresses the color components contained in light. Theoretically speaking, the color temperature refers to the color of the absolute black body after it is heated from absolute zero (-273°C). After the black body is heated. Gradually from black to red, to yellow, white, and blue light behind. when heated to a certain temperature. The spectral components of light emitted by a black body. It is called the color temperature at this temperature, and the unit of measurement is "K" (Kelvin). It is called a K color temperature, such as the color of the light emitted by a 100 W light bulb, which is the same as the color of the absolute D black body at 2527K, then the color temperature of the light emitted by this light bulb is: 2527K+ 273K=2800K
Color temperature is a measure of temperature, commonly used in physics and astronomy, based on the concept of an imaginary black object that glows in different colors when heated to different temperatures, the object appearing in different colors. Just like when you heat a block of iron, it turns red first, then yellow, and then white.
Color temperature calibrated using this method is the exact opposite of what the general public thinks is "warm" and "cold", for example, people usually perceive red. Oranges and yellows are warmer, whites and blues are cooler, while red actually has less color temperature, and then gradually increases are orange, yellow, white, and blue, with blue being the higher color temperature. When shooting with natural light, since the color temperature of the light in different time periods is different, the colors of the photos taken are also different. For example, when shooting under a clear blue sky, the color temperature of the light will be higher, so the photo will be cooler; if you shoot at dusk, the color temperature of the light will be lower, so the photo will be warmer. When shooting with artificial light, there will also be different types of light sources and different color tones of the photos taken.
Understanding the relationship between light and color temperature can help photographers shoot in different light, pre-calculate what tone will be taken in the photo, and further consider whether to intensify or reduce this tone, in practice. Which of the camera's functions should be used to intensify or soften this tone when shooting.
The color temperature of the light source is different, and the feeling is also different. Under the illumination of high color temperature light source. If the brightness is not high, it will give people a cold feeling; under the illumination of low color temperature light source, the brightness will be too high, it will give people a feeling of stuffiness. The lower the color temperature, the warmer (reddish) tones; the higher the color temperature, the cooler (bluish) tones.
Color temperature (colo(u)r temperature) is a characteristic of visible light that has important applications in photography, video, publishing and other fields. The color temperature of a light source is determined by comparing its color to a theoretical thermal blackbody radiator. The Kelvin temperature at which a thermal blackbody radiator matches the color of a light source is the color temperature of that light source, which is directly related to Planck's law of blackbody radiation.
