Andoer Macro AF Auto Focus Extension DG Tube 10mm 16mm Set Ring Metal Mount Support Full Frame for Sony E-mout NEX NEX-6 A7R A3000 This macro extension tube set is suitable for Sony NEX E-mout. Built-in electric pins, so it supports automatic focusing, automatic exposure, TTL, etc. Combined with 2 tubes in different length: 10mm, 16mm, can be used in any combination or individually to obtain the different magnification. With square port, support A7 full frame without vignetting. Perfect for macro shooting.