The Kenko-Teleconverter magnify telelenses to the factor of 2. It's qualitity is very good. The Converter is optimized for following digital cameras: Canon EOS 50D, 40D, 30D, 20D, 10D, 1000D, 550D,500D, 450D, 400D, 350D, 300D, 5D, 5D Mark II, 7D, 1D Mark II, 1D Mark III u.a.

Usefull for focal distance 50 mm and more.

Ready for use with Canon EOS-Cameras and lenses like EF-lenses, not compatibel with EF-S-lenses.

Please notice: Cameras made in 2007 in combination with Canon EF 50mm f 1.8 stop the autofokus during work with the converter, please start manuell focussing. During high zooming and lenses with open aperture 4.0 and more you´ll get no more autofocus and correct Exif-data file (especially the aperture).