scattering of light

1 red mirror (r): It can block blue-green light and darken blue parts such as the sky and leaves. In black-and-white photography, red mirrors are used to highlight white clouds and darken the sky, while absorbing ultraviolet rays. When blue drawings and documents are reproduced under artificial light, good contrast can be obtained by using red mirrors. This kind of mirror is also often used in infrared photography.

2 Yellow Mirror (Y): It is suitable for adjusting the contrast between black and white, and the effect of shooting white clouds in the sky is outstanding. The color depth of the mirror can be divided into various sizes and can be selected according to your own needs. It is also suitable for taking color photos with a light yellow lens.

3 Blue Mirror (B): Blue passes through three colors: blue, cyan and purple, with the largest throughput, and absorbs yellow, purple, orange, red and purplish red. Mainly used for black-and-white photography, it needs to be exposed twice (medium and blue). -Mirrors can absorb a small amount of ultraviolet rays.