Photographers around the world have been using expired film to get various effects according to the expiration date of the film. Sometimes the colors are saturated, sometimes they are muted. The results will always differ and this makes using expired film so exciting.
What we can consider as expired film are those that are a couple of years older than its expiry date. A film that has a couple of months passed its expiry date, will not provide different results than a non-expired film.
So how do I use expired film? Usually, I overexpose by one stop and edit in Photoshop or select some options of color correction before scanning. I do this in order to get results similar to a cross-processed film. Here are some results from applying this method.
There’s a rule that states that a film loses one stop of its speed after a decade of expiry. So, if you’re lucky to own a film with 10-20 years of expiry, apply this rule. At every 10 years, overexpose by one stop. If it’s ISO 400, after 10 years will be ISO 200.