Overview

The Kenko Teleplus MC4 AF 1.4 DGX is a 1.4x teleconverter that effectively extends focal length while maintaining autofocus with lenses of f/4 or brighter. Users report negligible image quality degradation and sharp results, especially with Canon 100-400L and Sigma 500mm lenses. It is lightweight and sturdy, with a tight fit and good lock. However, autofocus may hunt in low light. It suits wildlife photographers needing extra reach without significant optical compromise, particularly on APS-C bodies.