Can anyone enlighten me on how the different film formats are manufactured?
For example, is all HP5 produced on the same machine and then cut to specific sizes on seperate runs, or is the same machine used with just different size film run through for each format?

I am curious because it seems to me if the same machines are used to produce and cut all of one emulsion, as long as one format is produced, they can all be produced although with higher costs for formats less in demand in the future.
If specific machines are required for each format, I can see where as film becomes less in demand, those machines become unprofitable to maintain and operate.