Professional-quality tele-converter to extend the range of your lenses. Using this compact tele-converter lens, youcan extend the photographic range of your primary lens by 2X - allowing you to cover more distance and capture more subjects without the burden of extra equipment. Designed to support Sony G-Series 70-200mm f/2.8 G Telephoto Zoom and Sony G Series 300mm f/2.8 G Telephoto lenses as well as the unique Sony 135mm f/2.8 STF (Smooth Transition Focus) lens