Film for capturing images of blueprints, written documents, and other such material in reduced size.
This silver halide film possesses both extremely high resolution and clarity.
With a small grain size between 0.2 and 0.5 μm, microfilm is capable of storing reduced-size images without information loss. Furthermore, it can be easily viewed with a magnifying glass and can reported maintain its readability over hundreds of years with little degradation.
In the 1960s, the existence of the Philosophers' funds was documented on the microfilm by someone involved in their management. These hidden assets of the Philosophers came to be known as the Philosophers' Legacy.