LensFun as idea — a library to provide means to fix distortions and aberrations that lenses apply to captured photos — and a set of requirements was born two years ago at Libre Graphics Meeting in Montreal. As a real code it was born a bit later — you can read interview with Andrew Zabolotny by Joel Cornuz for details.
At this point we have a sophisticated implementation of LensFun in UFRaw, a quite simplistic yet working implementation in digiKam and somewhat forgotten test implementation in Rawstudio which hasn’t made its way to users yet — last thing I heard is Anders K. will probably do it soon now that Rawstudio has plug-in architecture. (And if he doesn’t, I will feel justified to renew my torturing skills that I got during my KGB secret agent course years ago :))
Currently LensFun suffers from lack of a very much up to date lens/camera database. New lenses pop up every few months, but most of its data is coming from the last available open ptlens database (before it went proprietary). So I have an idea. If you happen to have lenses unsupported by LensFun and you are planning to come to LGM, bring them, and we’ll do a calibration session. The walls of École Polytechnique — our old/new venue — have pretty straight lines to rely on, and at least one pano head with leveller will be available :)
By the way, you can start registering for the conference now! And if you would love to do a talk on free graphics software, do get in touch — the program is still in the works :)