At one time, the silver-based exposure process was the cornerstone of modern photography. That is, until the digital camera came along and changed the playing field. In the past, just about all photographic imaging was based on silver-based photographic chemistry. The use of silver chemistry has not ended, but instead, it is a secondary method of creating photographic images that is overshadowed by the digital process. Today, silver chemistry is still needed to produce x-rays, silkscreen emulsions and high-quality black-and-white prints.
Instructions
Processing Film
- 1
Unload the film from your camera, place it onto a development spool and then put the spool in a development tank. This step is done in total darkness, but involves no changes in the silver chemistry of the film. Once the film is safely enclosed in the development tank, the film processing can take place in a lighted room.
2Add the film developer through the special opening at the top of the development tank. The developer is designed to interact with the complex layers of silver chemistry that are already on the film. In essence, the developer reacts with those particles of silver that have been exposed to light and have consequently experienced a chemical reaction when struck by the light rays.
3Leave the developer in the tank for the prescribed amount of time and then empty the contents of the tank into a storage container before disposal.
4Fill the development tank with an acidic stop bath. The stop bath has a specific chemical formula that is designed to halt the chemical reaction that occurs between the developer and the exposed chemical particles that are embedded in the film. Even though the developer has been poured out of the development tank, residue amounts of this liquid can still react with the film.
5Remove the stop bath liquid and place it in the same container with the used developer.
6Add the fixer to the development tank. The fixer bonds with the tiny particles of silver that were not exposed by light, but has no reaction with other silver ions created by contact with a light source.
7Empty the fixer from the development tank. When the fixer is poured out of the development tank, it also carries with it the extra silver. That is why all used fixer is saved and put through a silver recovery process. Now the film can be removed from the tank and washed for about ten minutes. This is also a good time to preview the negative images, because the development process is now complete. The washing is necessary to cleanse the film of all excess residues, which at this point should be minimal.
8Hang up the film to dry.
At one time, the silver-based exposure process was the cornerstone of modern photography. That is, until the digital camera came along and changed the playing field. In the past, just about all photographic imaging was based on silver-based photographic chemistry. The use of silver chemistry has not ended, but instead, it is a secondary method of creating photographic images that is overshadowed by the digital process. Today, silver chemistry is still needed to produce x-rays, silkscreen emulsions and high-quality black-and-white prints.
Instructions
Processing Film
- 1
Unload the film from your camera, place it onto a development spool and then put the spool in a development tank. This step is done in total darkness, but involves no changes in the silver chemistry of the film. Once the film is safely enclosed in the development tank, the film processing can take place in a lighted room.
2Add the film developer through the special opening at the top of the development tank. The developer is designed to interact with the complex layers of silver chemistry that are already on the film. In essence, the developer reacts with those particles of silver that have been exposed to light and have consequently experienced a chemical reaction when struck by the light rays.
3Leave the developer in the tank for the prescribed amount of time and then empty the contents of the tank into a storage container before disposal.
4Fill the development tank with an acidic stop bath. The stop bath has a specific chemical formula that is designed to halt the chemical reaction that occurs between the developer and the exposed chemical particles that are embedded in the film. Even though the developer has been poured out of the development tank, residue amounts of this liquid can still react with the film.
5Remove the stop bath liquid and place it in the same container with the used developer.
6Add the fixer to the development tank. The fixer bonds with the tiny particles of silver that were not exposed by light, but has no reaction with other silver ions created by contact with a light source.
7Empty the fixer from the development tank. When the fixer is poured out of the development tank, it also carries with it the extra silver. That is why all used fixer is saved and put through a silver recovery process. Now the film can be removed from the tank and washed for about ten minutes. This is also a good time to preview the negative images, because the development process is now complete. The washing is necessary to cleanse the film of all excess residues, which at this point should be minimal.
8Hang up the film to dry.
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