Sigma lenses are compact, lightweight and high-performance designed especially for compact system cameras that utilize the Sony E-mount or Micro Four Thirds system.
The Sigma lenses are compatible with Four thirds cameras such as the Panasonic DMC-GX1, Olympus E-M5 and Panasonic DMC-GF3.
Some Micro 4/3s Lenses are designed for both Sony's E mount lenses, thus their larger than usual size, however, there are also MFT lenses from this company, most likely much smaller designs.
Superior optical performance and functionality. Sigma lenses' original innovation is now more polished and refined than ever before.
The simple shape of the focus ring, varying textures that distinguish each part of the Micro Four Thirds lenses, the elegantly etched product name, the use of metal on almost all external areas of the lens, the unibody design of the hood—all of these elements add up to a lens design that is ideal for mirrorless interchangeable lens cameras.
In addition, photographers have the choice of black or silver to match their favorite equipment. The basic concept, however, is no different from that of other Sigma lenses: responding intuitively to the photographer's intentions and performing fundamental functions at the highest level possible. The interior of the lens features a quiet and powerful linear motor, while the brass mount combines high precision with durability. Designed for use over the long term, this lens features treated surfaces, enhanced strength and overall construction of the highest quality.