The goal of the Lensfun library is to provide a open source database of photographic lenses and their characteristics.
The Lensfun library not only provides a way to read the database and search for specific things in it, but also provides a set of algorithms for correcting images based on detailed knowledge of lens properties. Right now Lensfun is designed to correct distortion, transversal (also known as lateral) chromatic aberrations, and vignetting.
