Rangefinder Wide angle lenses on a7 cameras - problems and solutions

Great, albeit a somewhat technical article from Philip Reeve about using wide angle rangefinder lenses on Sony's A7 series cameras. It's long being a well known issue that sing certain lenses with an adaptor can lead to some issues due to the nature of digital sensors vs film, but there are some interesting solutions in this article that I had't seen before. Well worth a read if you have one of the A7 series cameras and are considering using a wide angle Leica or similar lens.