The Viltrox C-AF 2X Magnification Teleconverter Extender Auto Focus Mount Lens for Canon EOS EF Lens for Canon EF lens 5D II 7D 1200D 760D 750D DSLR Camera finished with Viltrox C-AF 2X TELEPLUS can make the focal length of all the for Canon EF lens increased to 2 times as respectively.. C-AF 2X specially use for 100mm or more fixed focal length lens, but not recommend for use in less than 60mm of short-focus lens.. The auto-focus function of the original camera lens can be used perfectly, and don’t change the EXIF information.. Mount Type: for Canon EF-Mount lens. Depth of field: Half of the original lens Constitution of the lens: 7 glasses,4 groups. This kind is one of the Good Digital Camera Lenses from Viltrox. This Viltrox C-AF 2X Magnification Teleconverter Extender Auto Focus Mount Lens for Canon EOS EF Lens for Canon EF lens 5D II 7D 1200D 760D 750D DSLR Camera has been reviewed by more than 1 customers…