Product Review:
Designed to be used with specific lenses. High performance 5 element/3 group optical design. The high performance optical characteristics of these teleconverters maintain the optical performance of the compatible lenses with which they can be used. Using 10-pin electrical interfaces, there is no loss of autofocusing speed when these teleconverters are used with compatible H.S.M. type lenses for Sigma AF cameras; providing normal exposure and autofocus function, while maintaining its high optical performance.
Price:
$198
