 Sigma teleconverters : Today Sigma officials announced two new tele-converter lenses: the APO tele converter 1.4x EX DG and APO tele converter 2x EX DG. Both have a multi-layer lens coating to reduce flare and ghosting, which will not effect the quality of the other lens in use and high speed auto focus is retained when the converters are used. Digitally optimized tele-converters, exclusive to Sigma’s telephoto and telephoto zoom lenses. New multi layer lens coating and lens design reduce flare and ghosting. The high image quality of the master lens will not be compromised thanks to this new design concept. High-speed Auto Focus is retained even when these tele-converters are utilized.
|
Sigma APO converter - Lens coating
