Shooting Expired Film: How to Expose It and What to Expect

Expired film is film used after the date on the box. It can produce beautiful, unpredictable results or nothing at all, and the difference depends far more on how the film was stored than on how old it is. Here is how to judge a roll, expose it and develop it.

What happens as film ages

Film slowly loses sensitivity and gains base fog, density that forms on its own over time, from heat, humidity and background radiation. The effects:

• Lower effective speed: the film needs more exposure.
• More fog: negatives look gray and flat, with weaker contrast.
• Color shifts: in color film, the three layers age at different rates, often giving magenta, green, or cyan casts.
• More grain: especially in fast films.

Fast films age faster than slow ones, partly because they are more sensitive to background radiation. ISO 800 film from 20 years ago is often far more degraded than ISO 100 film of the same age.

Storage matters most

Film kept frozen since purchase can be nearly as good as new decades later. The same film left in a hot attic or car for a few summers may be badly fogged within a couple of years of its date. Ask how film was stored before buying it, and treat "unknown storage" as "assume the worst."

The one-stop-per-decade rule

Adjust from there: for film that was frozen, half a stop per decade or less may be enough; for film that was stored hot, or for fast film, add more. Since color negative and black and white film handle overexposure well, erring generous is safer. Expired slide film is the hardest to get right: its narrow latitude leaves little room, and color shifts are more visible on a positive.

Shooting a test roll

If you have several rolls from the same batch, shoot one as a test, bracketing a stop and two stops over your guess, and develop it before using the rest. The results tell you the best EI and development for the whole batch.

Developing expired black and white film

Black and white film gives you the most control. Common approaches:

• Extend development 10 to 20 percent to restore contrast lost to fog.
• Add a little benzotriazole, an anti-fog restrainer, to the developer to reduce base fog.
• Use semi-stand development when you don't know how the film will behave.

Very old film, from the 1950s or earlier, may use older processes and emulsions. Most can be developed as ordinary black and white film, but expect heavy fog.

Expired color film

Expired color negative film is developed in normal C-41; some photographers ask the lab to push one stop for very old film. Most color shifts can be corrected in scanning, though heavily fogged film often looks flat and grainy no matter what. Some people seek out these shifts for their look.

Expired film on FilmPhotography.com

When you upload a photograph shot on expired film, you can mark it as expired and note the expiry year and how the film was stored. That makes it easy for others to see what a particular old film can still do. Browse members' frames by film on the film stock pages.

All the guides are on the Learn Film Photography page, and every term is in the glossary. Shot something on film? Share it in the gallery.