Introduction: Viltrox EF-NEX IV adapter Compatible with Canon EOS EF/EF-S series lens to be used on Sony NEX E Mount Camera. By adapter mounting it can achieve functions of EXIF signal transmission, Autofocus and Aperture adjustment, etc.Upgraded Function: 1) USB Port :Update the adapter's firmware. 2) Two Auto Focus model : a) PDAF (phase detection auto focus): Focus speed is faster. b) CDAF (contrast detection auto focus): Focus success rate is higher 3) Professional extinction treatment: spiral inner wall to absorb high-reflective light Compatible lenses: Canon EF/ EF-S series lens (include Tamron, Sigma, Tokina, Zeiss etc EF mount lens) Canon EF 24-70mm f/2.8L II USM; Canon EF 70-300mm f/4-5.6L IS USM; Canon EF 20-35mm f/3.5-4.5 USM; Canon EF 24-105mm f/4L IS; Canon EF 50mm f/1.4 USM; Canon EF 100mm f/2.8 Macro; Canon EF 50mm f/1.8 II; Canon EF 17-40mm f/4; Canon EF 70-200mm f/2.8L IS II USM; Canon EF 70-200mm f/4L; Canon EF 35mm f/1.4L; Canon EF 70-300mm; Canon EF 16-35mm f/2.8L II; Canon EF 24-85mm f/3.5-4.5 USM; Canon EF 28-135mm f/3.5-5.6 IS; Canon EF 70-300mm f/4-5.6 IS USM; Canon EF-S 10-22mm f/3.5-4.5 USM; Canon EF-S 15-85mm f/3.5-5.6 IS USM; Canon EF-S 18-200mm; Canon EF 85mm f/1.8 USM; Canon EF 70-300mm f/4.5-5.6 DO IS USM; Canon EF-S 18-55mm f/3.5-5.6 IS STM; Canon EF 20-35mm f/2.8 L; Canon EF 14mm f/2.8 L; Canon EF 180mm f/3.5 L; Canon EF 70-200mm f/4L IS USM; Canon EF 24-105mm f/3.5-4.5; Canon EF 28-80mm f/3.5-5.6 II; Tamron 18-270 F3.5-6.3; Tamron 150-600mm f/5-6 Compatible Camera: Sony A9, A7SII, A7RII, A7II, A7S, A7R, A7, A6500, A6300, NEX-VG30, NEX-EA50, NEX-VG900, NEX-FS700, NEX-FS100, NEX-VG10, NEX-VG20. Package Included: Viltrox EF-NEX IV adapter x 1 NOTE: does not include the camera