Signstek Newest Version Electronic Auto Focus EF-NEX EF-EMOUNT FX Lens Mount Adapter for Canon EF EF-S Lens to Sony E Mount NEX 3/3N/5N/5R/7/A7 A7R Full Frame Frame
This item is mainly used for connecting the Canon EF series lens' to 'Sony NEX series cameras with E-mount'.It utilizes the new electronic technology, which can make the aperture exactly being aligned via the adapter, and adjusted for auto-focus.It enhances the convenience of controlling the Canon EF series lens on Sony micro-single camera bodies in the electronic way.Aperture hole of the adapter design is based on the full-frame NEX camera, which help perfectly support the Sony NEX full-frame camera A7 and A7R.Specs:Compatible lens:  Canon EF series lensCompatible Cameras: Sony NEX series with E-mount (Including Sony NEX full-frame camera A7/A7R)Front mount: Canon EF mountRear mount: Sony E mountTripod screw: 1/4 screwCompatible List:Compatible camera:NEX-3C NEX-5 NEX-5R NEX-5R NEX-5C NEX-6 NEX-7 NEX-F3 VG20 VG30 VG900 FS700A7 A7RCompatible Lens:Sigma:17-35/2.8-4 EX HSM ASPH 18-125/3.5-5.6 DC OS HSM 24-70/2.8 EX HSMTAMRON: 18-270/4.5-6.3 VC   SP 28-75/2.8   24-70VC   SP 150-600mm f/5-6.3 Di VC USDZeiss:ZE Distagon 21/2.8  ZE Distagon 15/2.8   ZE Makro-Planar 50/2    ZE Makro-Planar 100/2Canon Zoom: EF 16-35/2.8L USM  EF 16-35/2.8L II USM   EF 17-40/4L   EF-S 17-55/2.8 IS USM   EF-S 17-85/4-5.6 IS USMEF-S 18-55/3.5-5.6   EF-S 18-55/3.5-5.6 IS II   EF-S 18-135/3.5-5.6 IS   EF 22-55/4-5.6EF 24-70/2.8L (I)   EF 24-105/4L IS USMEF 28-70/3.5-4.5 II   EF 28-80/3.5-5.6 IIEF 28-135/3.5-5.6 IS USM   EF 35-80/4-5.6EF-S 55-250/4-5.6 IS   EF 70-200/2.8L IS USM (I)EF 70-200/4L IS USMCanon fixed focus: EF 14/2.8L   EF 20/2.8 USM  EF 24/1.4L II EF 24/2.8 (old version)  EF 35/1.4L USM  EF 50/1.4 USM  EF 50/1.8 II  EF 50/2.5 macro  EF 85/1.2L II USM   EF 85/1.8 USM  TS-E 90/2.8  EF 100/2.8L IS USM macro   EF 135/2L USM  EF 180/2.8L macro  EF 200/2.8L II USM  EF 300/4L IS USM  Extender EF 1.4x III  Extender EF 2x (I)