These obviously are (technically) AF, as they have the full contact set. But don't be that focused on that feature - in practice, AF with tubes might disappoint you. That is, all my E-mount primes (Sony 16mm and 30mm macro plus the Sigmas) take a terrible time hunting for focus with the Kenko extension rings on both C3 and 5N, and frequently find no focus at all - I suspect that the camera AF software does not even consider the possibility of extension rings. Unless the later cameras improved something there, you'll be better off using them in manual mode.
Nonetheless, if you want to use E-mount lenses close up you'll need a tube kit with electronic contacts. The cheaper all-mechanical tubes will only work with adapted manual legacy lenses, as the E-mount lenses require the contacts to set their (electronically controlled) aperture even in manual focus mode.
