Sigma APO EX DG 1.4x (S370283) Lens Converter

Sigma 824110 1.4x DG EX APO Teleconverter for Sigma SLR Cameras

The dedicated 1.4x APO Teleconverter features a high performance 5 element/3 group optical design, and it is optimized for use with long telephoto and telezoom lenses.The high performance optical characteristics of these teleconverters maintain the optical performance of the compatible lenses with which they can be used. Sigma APO Tele Converter 1.4x and 2x are dedicated Tele Converter lenses, which should be used only with the listed lenses. The 1.4X Convertor will fit the following lenses with a SIGMA Mount 180mm f/3.5 APO MACRO EX HSM - MF 300mm f/2.8 APO EX - AF 300mm f/4.0 APO MACRO - MF 400mm f/5.6 APO MACRO - MF 500mm f/4.5 APO - MF 70-200mm f/2.8 EX HSM - AF 70-210mm f/2.8 - MF 50-500mm f/4-6.3 APO - MF 120-300mm f/2.8 EX APO - AF 300-800mm f/5.6 EX APO - MF On the lists, the lenses marked "AF" will retain auto focus operation when used with a Tele Converter. The lenses marked "MF can only be used for manual focus. Please refer to the manufacturers Teleconverer Matching List for an updated compatability chart. http://www.sigma-p hoto.co. jp/english/acc/co ndaitr.htm

Sigma APO Teleconverter 1.4x EX DG for Nikon Mount Lenses

The dedicated APO teleconverter can be mounted between select lenses and camera body to increase the focal length by the power of 1.4x. 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, without any variation in the minimum focusing distance. Compact and lightweight, these teleconverter convert your lenses into longer focal-length lenses, so you don't have to do a lot of unnecessary footwork.