Exposure to light typically gets most of the blame for fading photographs. However, air pollution can sometimes be an even bigger cause.
The inks, pigments, and metals used in photography can chemically react with air pollutants and degrade images, even in the absence of sunlight. This is not a big problem in modern cases since the process is slow and the original digital photograph can just be reprinted. However, it’s not that simple when it comes to historic photographs with only one original copy. Protection from air pollution is something that needs to be considered to preserve them. [Read more…] about Ozone & Historic Photograph Preservation