When was the color photograph invented?

Color photographs were invented in 1904.

At the end of 1873, H.W. Vogel (1834–1898), a professor at Berlin Technical University, Germany, soaked the collodion photosensitive plate in phenylammonium solution, and then it could feel green light. As soon as the experiment was published, scientists were encouraged to look for other color photosensitive additives. Photographic film can only perceive blue light at first, and then it can perceive purple light. In AD 1874, it can sense yellow light, and in AD 188 1, it can sense red light. At this time, the negative can be color sensitive to red, orange, yellow, green, blue, purple and other colors. However, the brightness of the photo needs to be improved.

By 1904, the French Lumiere August and Louis1862.1864–1954.1948 invented the real color negative, which is recognized as a revolutionary event of "color photography".