Bulk Loading 120 Film: Challenges, Equipment, and Alternatives
Bulk loading 120 film, a format widely used in medium format cameras, presents unique challenges compared to the more straightforward process of bulk loading 35mm film. In this article, we will explore the key points to consider when attempting to bulk load 120 film, including its format, the need for special equipment, cost and availability, and alternative options. We will also discuss the specific requirements and potential issues you might encounter when trying to bulk load 120 film.
Film Format
120 film is typically sold in pre-rolled rolls for use in medium format cameras and is not specifically designed for bulk loading. This means that attempting to load 120 film in bulk is not a common practice and can be quite complicated. Bulk loading 35mm film, on the other hand, is much more straightforward, as it is commonly used in single-adapter format systems.
Special Equipment
While some specialized methods and equipment can be used to load 120 film, they are not as common or straightforward as those for bulk loading 35mm film. Key equipment includes a changing bag or darkroom to transfer the film from its original spool to a reusable 120 spool. This process requires careful handling to avoid light exposure, making it a complex and delicate procedure.
Cost and Availability
Sourcing 120 film that is pre-rolled and properly wound is generally more accessible than trying to bulk load it. Buying pre-rolled 120 film ensures that the film is correctly wound and protected from light exposure. This makes it a more reliable and user-friendly option compared to attempting to bulk load the film yourself.
Alternative Formats
If you are looking for bulk loading options, it is recommended to stick with 35mm film, which is more widely supported for bulk loading. 35mm film has a smaller format and is often used with various bulk loading systems, making it a more common and user-friendly option.
Specific Requirements and Potential Issues
Bulk loading 120 film also comes with specific requirements and potential issues. The film format is significantly wider than 35mm, and you must ensure that you have a reliable source of 2.25-inch wide film, along with suitable backing paper. Factors such as the opacity, coefficient of friction, and crimpability of the edges of the backing paper are critical for maintaining proper alignment between the film and the backing paper.
The film is typically taped on only the lead end, so maintaining alignment during winding is crucial. To avoid light exposure and ensure proper winding, the film and paper must be wound on the supply spool with the untaped end on the inside. The risk of light exposure is a significant concern during this process, making it a challenging and intricate task.
Moreover, issues can arise from using previously used backing paper, as the light protection might not be as effective as that of new paper. Historically, minor changes in the backing paper caused unexpected consequences, leading photographers and film enthusiasts to be cautious about any variations.
Conclusion
In summary, while some enthusiasts might find ways to work with 120 film in bulk, it is not a common practice, and the process is generally more complicated than using standard pre-rolled film. For those looking for bulk loading options, sticking with 35mm film is a more straightforward and reliable choice.