Expired Film Calculator
Use this calculator to work out what ISO to set your camera to in order to get the best result from your expired film.
Expired film calculator
Old film loses speed as it ages. Tell us about your roll and get a starting ISO to set on your camera or meter.
Set your camera to
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Based on the common rule of about one stop of overexposure per decade, adjusted for storage and film speed. Every roll ages differently, so bracket if the shot matters.