Do you have a color photo of 1985?

Color photographs appeared in 1985, and the real color negative was invented in 1904, which is recognized as a revolutionary event of "color photography". Color plates used in color photography are usually coated with three layers of emulsion, and optical sensitizers with different properties are added respectively, so that the plates can feel red, green and blue light respectively.

After color negative is exposed, developed, bleached and fixed, the coupler in each photosensitive layer is coupled with the oxidation product of the color developer to form a negative image complementary to the color of the scene. Then print or enlarge the image on the negative to the positive color photographic material.

Before the advent of multi-layer color film, the camera used to take color photos was an ordinary camera and three color filters (red, green and blue), which were shot three times respectively to get red, green and blue backgrounds. Because the overlapping accuracy of three-beat color separation is very high, it is limited to shooting still life. Therefore, a color camera with one exposure is designed and manufactured.