It uses lensfun. See http://www.darktable.org/2015/02/on-lens-detection-and-correction/ http://www.darktable.org/2015/02/on-lens-detection-and-corre... and http

It uses lensfun. See http://www.darktable.org/2015/02/on-lens-detection-and-correction/ http://www.darktable.org/2015/02/on-lens-detection-and-corre... and http://www.darktable.org/usermanual/ch03s04s04.html.php#lens_correction http://www.darktable.org/usermanual/ch03s04s04.html.php#lens....