Is it really difficult to make color movies? . . . . . ?

Although there are not many manufacturers producing color films, they are not the only ones. Common ones are:

The United States has: Polaroid Kodak (Pula)

Japan: Fuji, Konica,

Germany has: Aikefa,

Britain has: Ilford.

Of course, China has: Le Kai.

The photosensitive material industry is a technology-intensive fine industry, and there are two difficulties in making color films:

1, the manufacture of emulsion and the control of silver salt particles are the keys to determine the film: sensitivity, tolerance and imaging fineness. .

2. Dyes. Color films are emulsions coated with red, green and blue. The dyes of these three colors determine the color reproduction ability and quality of the films. The film factory is not only the focus of research, but also an absolute secret. In the 1970s, Picture World reported that the Japanese went to the American Pula Company to steal the formula. It can be seen that the Japanese also find it difficult and have to move on to the next step.

There are others, such as:

1. Film base manufacturing.

2. The production of film is simply the process of: film base = "emulsion coating =" cutting, punching, printing = "packaging, etc. As for the coating, as far as I know, there are many layers: the back of the film base is coated with an antistatic layer, and there are three anti-blooming layers, a photosensitive emulsion layer, three isolation layers and a protective layer outside. It can be seen that the process route is long and complicated.

3. In order to get the best color reproduction, each factory has its own washing formula, which is also a trade secret.

4. The production process is complex, the assembly line is long, and the quality control requirements are high.

Le Kai's predecessor was China Baoding Photographic Film Factory, which was built in 1956 with the help of the former Soviet Union. It was produced for 20 years (black and white), but I didn't want to use it at that time. The film base was brittle, with large contrast and coarse particles. Later, there was a color scroll, but the color was wrong for a long time. This can also reflect the difficulty of its production and manufacturing.