We believe that a lens is the most important resource for photographers and the key device needed in creating the individual photographic expression. The hope of the new product line of SIGMA’s Global Vision lenses is to provide a system that is genuinely photographer-centered and designed to build a long lasting relationship with the user. SIGMA introduced a revolutionary way of re-thinking lenses with the introduction of the Global Vision product line and as an experienced lens manufacturer has proven again the capability of creating a diverse range of interchangeable lenses. The company’s desires and know-how have crystalized further by creating a new unique paid service with the introduction of the “Mount Conversion Service”*. With this service, any of the Global Vision Lenses can be converted to a different mount system. This allows photographers the further ﬂexibility of changing their camera body systems and is likely to evolve the lens manufacturing industry to a higher level of service expectation.