Specially modified by Technovision in Italy, they did several mods including in some cases replacing the elements, adding elements, increasing the wide end and greater stops. They were most famous for their Anamorphic mods. The biggest fan of the Techno lenses was Vittorio Storaro, who advertised them for Technovision and used them on a lot of his work. This lens has a beautiful, warm look. It is a true classic. This is a very special and rare lens. Front Diameter 144mm.