Bones B&W Film

The Bones B&W film is a black and white film. Bones Films is a provider from Brazil. The film was produced by another company. It is a medical radiography film.

The film does not have a set ISO because it was not made for visible light. Nevertheless, an equivalence can be established where the film can be used from ISO 100 to 3200 without any problem. Tests also showed successful applications at ISO 8000. The selected ISO directly affects the development time of the film, with a higher ISO meaning a longer development time. ISO selection should be made before using the film and maintained until the end of the roll.

The film is orthochromatic, meaning it can be manipulated in a dark room under red light. It is also UV sensitive, although a filter can help reduce the haze.

The film has an emulsion on both sides, but lacks a protective resin layer. Therefore, special care is recommended in handling and disclosure to minimize the risk of scratches.

Development of the film

Unlike conventional color negative films, Bones B&W film is not subject to a set development process. Development must be carried out in a specialized black and white developer. This process can be carried out both in professional photo laboratories specializing in black and white development, as well as at home using the appropriate photo chemicals and necessary accessories. It is important to note that the processing chemical selected has a direct impact on various aspects of the final image, including contrast, film grain, and gray tone gradations.

Development times

Calculation of the development solution
How much development solution do you need?

You should use Rodinal up to a maximum of ISO 400.

Since there are no set development instructions for the specific combination of film and developer, it would be advisable to determine development procedures using similar types of film or to explore experimentally the optimal conditions to achieve satisfactory results. The end product of this process is finished negatives, which can then either be made into prints or digitized. It is common for processing laboratories to offer services for creating prints of various sizes in addition to developing the film.

For further processing in digital format, there is the option of scanning the film strips. There are various methods available for digitizing different film formats. There are even some document scanners that come with features to scan negatives. Once the digitization process is complete, the digital files can be used as desired, be it sharing on social media or printing in various formats.

Formats

The B/W film is offered for 35mm and medium format. With an image size of 24 x 36 mm, the number of images per film roll is 20. Automatic reading of the film sensitivity is not possible due to the lack of a DX code on the 35mm film cartridge. There is a possibility that modern 35mm cameras may be limited due to the lack of coding.

Suitable cameras for the 35mm format are available from various manufacturers such as Lomo, Minolta and Fujifilm. Medium format cameras from manufacturers such as Holga, Pentacon or Minolta, to name just a few, are ideal for exposing medium format film.

This film is thicker than traditional 120 and 135 films, which may cause a slight drag as the image advances. While cameras without backs are not a problem, film can stall in cameras with backs such as the Hasselblad, Bronica or RB67. However, with the introduction of new equipment in production, this problem was largely eliminated.

Storage

Possible losses in quality can be prevented by optimally storing the unexposed film material. To avoid loss of quality, it is recommended to store the unexposed film material in a cool and dry place. For the best quality images, it is recommended to develop the exposed film as soon as possible. It is recommended not to store the film in the refrigerator as moisture may affect the quality of the film.