Were there any color photos in 1948?

the earliest color photo was taken in 191!

about negatives:

In 194, the French Lumiere August and Louis (1862.1864–1954.1948) invented the real color negative.

in 181, the British physicist Thomas Young 1777-1829) published his research on color, saying that people's eyes can have the "color sense" of three visual nerves: red light, green light and purple light. Furthermore, it is claimed that all the three basic colors of red, green and purple are mixed in nature, so that we can feel many, many different colors.

in 186, Maxwell 1831-1879) in England studied color negative, and took the lead in taking pictures of three primary colors, namely red, green and blue, and then overlapping and projecting them to form a color image. This is the color Additive Process, which leads to the principle that color TV can display color. Since then, the world photography has started from black and white to color. That is, the rise of what people call the "color photography era".

in 1869, a French scientist, Ducos Hauron, was the first person in history to put forward the idea that three basic pigments, red, yellow and blue, were blended according to different proportions by artists to produce color photos. Although his works are not satisfactory, there has been a breakthrough in color photography.

at the end of 1873, professor H. W. Vogel (1834–1898) of Berlin University of Technology in Germany dipped the collodion photosensitive plate in phenylammonium solution, and it could feel green light. Once the experiment was published, it encouraged scientists to look for other color photosensitive additives. Photographic film can only sense blue light at first, and then it can sense purple light. In 1874, it can sense yellow light, and in 1881, it can sense red light. At this point, the negative film can have a "color sense" for red, orange, yellow, green, blue and purple, but the brightness of the photos needs to be improved.

in 1888, Edison Thomas Alva 1847-1931), the greatest inventor in the world, made the first Kinetograph in history. On a 5-foot-long film, 6 images have been shot continuously, which are put in a big box with a viewing hole for one person to see the scenery for about one minute, which is called "watching western films" in China.

In 1889, Edison cooperated with Hysmans to establish the future film and camera, film format and side-twisting hole spacing. This is the beginning of the "standardization" of manufacturing photographic equipment all over the world, which is of great significance.

in February 1894, Edison built the world's first film studio shed, filmed the first film Black Maria, and then "watching western films" became popular all over the world.

in 1891, the French physicist Lippmann Gabriel 1845-1921) announced a novel color photography method without dyes. He is a famous professor at the University of Paris, and won the Nobel Prize in 198 because he was the first to make a "color photographic plate" by scientific method. He uses technology to add a layer of reflective mercury to a full-color emulsion, so that light and shadow pass through the emulsion, and then reflect back and "interfere" with the incident light and shadow into a latent image, which will be accepted, and each color has different images, which is obvious and vivid when viewed. However, the process of color negative produced by Lips method is very complicated, which can't be printed repeatedly and needs a long exposure, so it can't be popularized. However, he applied science to the development of photography and made great contributions, and the Nobel Prize was awarded.

In 194, Lumiere August and Louis (1862,864–1954.1948) invented the real color negative, which was recognized as a revolutionary event of "color photography". The Lumiere brothers are great inventors who have never seen in the world to make photographic equipment. Before they were twenty years old, the two brothers set up a factory to make photographic equipment. In 1894, they had produced and sold nearly two million negatives a year.