Performance and characteristics of the camera filter

In fact, the performance of different filters is also different. For example, the basic function of color temperature conversion filters and color temperature compensation filters is to change the color temperature of the imaging light. They are manufactured to overcome the limitation that the film itself cannot change the color temperature (but digital cameras can adjust the color temperature, which can save various color temperatures. Filter). The design principle of the filter is the subtractive color method. The common feature of various filters is light reduction (reduce this light and increase the other light). The filter can selectively pass and partially pass the imaging color light, and the unpassed ones are reduced. For example, a UV mirror subtracts ultraviolet light, a polarizer subtracts polarized light, and a red filter subtracts blue and green light.

Color filters all have colors, red, orange, yellow, green, cyan, blue, and purple. The color filter is a colored medium. What color filter transmits what color light, while blocking the passage of other colors. Photography really uses filters to control the color and light components of the image to achieve the purpose of adjusting the color tone.

Yellow and orange filters are used to reduce the color temperature. The yellow filter is used to correct slight color casts and is called color temperature compensation or color temperature balance filter. The orange filter is used to convert the light source and the color temperature of the chip, which is called the color temperature conversion filter. Blue and purple filters are used to increase the color temperature. The blue filter is used for light source and chip color temperature conversion.