What are the three primary colors and three complementary colors of a camera and their relationship?

A detailed description of the relationship between the two in the encyclopedia:

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Three primary colors and three complementary colors 1

Three primary colors: red, green and blue.

r、G、B

Three complementary colors: cyan, magenta and yellow.

c、M、Y

The so-called complementary color of one primary color is the sum color of the other two primary colors. Among the three primary colors, the sum of red and green is yellow, the sum of green and blue is blue, and the sum of red and blue is product.

Black and white film pays attention to the exposure accuracy, density and layering of photos. In addition to the above elements, color reproduction, color saturation and the expression of creative ideas to be reflected in color photos are also extremely important.

From the effect of film development, the color of color photos is influenced by the characteristics of lens selection, film selection, exposure accuracy, illumination angle and other factors, but for a photographer with basic experience, if the above factors have been selected, I feel that there is not much room for adjustment. Then, for photographers who are not strong in economic strength, they can't always go to professional print shops to print films. Ordinary color print spots may have color cast.

Those films are all off-color when they are shot in the color expansion shop and can be adjusted. According to my experience, taking portraits mainly depends on how the skin color in the photos is restored; The photos of architecture and the integration of people and architecture mainly focus on the color reduction of building materials (if there are many pavements, look at the color reduction of pavements); Landscape photos, it's hard to say, usually have green plants, depending on the color reduction of plants.

If there is a color cast, you can ask the color expansion shop to retype it. Here are some ways to adjust the color.

Yellowing: reduce yellowing

Redness, quality: increase cyan (the complementary color of red) and reduce quality.

Purple: (more blue, less red) add yellow and subtract product.

Partial green: additional products

The above color cast is a common problem in most photos. Generally speaking, the adjustment of color cast in photos is also based on the principle of three primary colors and three complementary colors.