The magazine MAQ The magazine MAQ ART December 2018 | Page 68

1 In the first step of the process of acidification is to put the film in diluted solution at room temperature and for a specific period of time, the solution works on the grains affected by light, turning them into silver atoms, while the grains that are not affected by the light in the image as silver halides.

2 The next step to complete the process of acidification is to wash the film with water.

3 Granules that are not affected by light are removed and remain in the form of silver halide crystals through the installation process where the film is placed in a basin of fixation solution for a specified period of time. This process eliminates areas that are not exposed to light in the film and remains only the granules which Turned into silver atoms.

4 The final step is to wash the film with water to get rid of all chemical compounds used and leave the film to dry, then cut the tape to get a slide representing the scene called negativ.

The picture shows the scene where the dark areas are the most intense or the most concentrated of the atoms of silver and those areas are more exposed to the light resulting from the reflection of the body, for example, a person wearing a white shirt is the light reflected on the film more than if he was wearing a shirt The black color appears on the negatives more black than in the case of the black shirt.

It should be noted here that the role of the gelatin layer plays a key role in the process of acidification, as it works to stabilize the grains containing the atoms of the film in place, and has another role is to get rid of the crystals of silver halides with the help of acidification solution.

Developing black and white

films and printing them out?