Offers Sigma's OS System allowing handheld photography even in low light situation
HSM (Hyper-Sonic Motor) ensures a quiet and high speed auto focus
FLD glass elements with performance equal to fluorite glass for compensate for color aberration
Ultra compact with overall length of just 3.6"
These APO teleconverters can be mounted between select lenses and the camera body to increase the focal length by the power of 1.4 or 2. The new multi layer coating reduces flare and ghost, which is a common problem with digital cameras. They demonstrate best performance with DG series lenses. They also offer maximum photography magnification by 1.4 x or 2x, without any variation in the minimum focusing distance. Compact and lightweight, these teleconverters convert your lenses into longer focal-length lenses, so you don't have to do a lot of unnecessary footwork.