Agfa APX 100 Original Emulsion – 135/36 Black and White Film (Expired)

How to expose expired film?

As a simple rule, for every 10 years expired, you can overexpose +1 stop.
This means a 400ISO film which expired in 2014 would have to be exposed at 200ISO.
After that, the film is developed normally.
But this is not an exact science. The storage of a film also matters a lot.
If the film was frozen for 20 years, the result will be much closer to a non-expired film than if it was in the attic. Heat is the biggest enemy of a film anyway.
One day in a hot car is often enough to significantly damage the film.
The ISO value of the film also matters. High ISO films (3200-400ISO) usually age faster than low ISO films. A color negative ISO 100 film expired in 2013, often can be exposed at 100 ISO and won’t have crazy color shifts . But as I said “it depends”.

Apart from overexposure, it is also possible to expose the film normally and then push the required stops later during development.
For very old films a combination of both is recommended.
In general you are quite well served with the overexposure of the film.
Unfortunately I can’t guarantee good results because expired films are always a lottery and to estimate the result better, you need some experience.
Basically it is important to expose these films in a lot of light, or rather in sunlight.
The images will most likely have much less detail in the shadows, will be grainy, have different color casts (green, blue, pink, yellow) and generally look more raw.
It’s an experiment and a lot of different things can happen, but also a lot of cool things.