Overview

The Kenko Teleplus Pro 300 AF 2.0x teleconverter offers good build quality with stainless steel mounts and no protruding front element, allowing compatibility with more lenses than Canon's extender. Optical quality is generally praised, with some users finding no discernible difference in sharpness when used with a good lens, though image quality loss can occur with mediocre lenses. Autofocus performance depends on lens aperture: works well with f/2.8 or brighter lenses, but may hunt or fail with slower lenses. It suits photographers needing extra reach on high-quality telephoto lenses, but is not recommended for zoom lenses starting under 50mm.