Here’s the answer for those of you asking for a set AF/AE extension tubes for full frame Sony a7-series cameras.
Vello EXT-SFED Deluxe Auto Focus Extension Tube Set for Sony E-Mount ($82.50 at B&H Photo) offer Auto Focus and Auto Exposure without any vignetting or cropping on fullframe Sony a7 a7R a7S and a7II mirrorless cameras. The set includes two extension tubes, one 10mm and one 16mm, that can be used individually or together to create the desired magnification.
These are fully automatic extension tubes in that they are able to communicate all electronic functions from lens to camera including autofocus and auto exposure. Their metal E-mount lens mount is smooth and solid for a secure fit built for durability. They give your E-mount lens macro capability while maintaining the lens’ original optical quality.
Sony A7II + FE 55mm minimum focus distance without Extension Tubes
Sony A7II + FE 55mm minimum focus distance with 10mm Vello EXT-SFED AF Extension Tube
Sony A7II + FE 55mm minimum focus distance with 16mm Vello EXT-SFED AF Extension Tube
For closer focusing use the larger extension tube or stack the tubes together. Extension tubes have no optical elements so they do not degrade the quality of your lenses.
Sony A7II + FE 55mm minimum focus distance with 10mm + 16mm Vello EXT-SFED AF Extension Tubes