What is the natural lifespan of photographs?
A traditional color photograph, if stored properly under reasonable room temperature conditions of 77 degrees Fahrenheit (25 degrees Celsius) or less with 20 to 50 percent relative humidity, and if stored in a photo-safe environment, will typically have a lifespan of 50 to 100 years. Black-and-white photographs, if stored in similar conditions, will typically have a lifespan of 100-plus years.
