M42 Lens to SONY E adapter NEX3 NEX5 NEX7 NEX-3 NEX-5 NEX-7 NEX-VG10 DC108 (Electronics)
This ring is not adjusted: with 2 different optics on my Sony A6000, placing none at infinity is false (too long). So yes, okay, it is possible to adjust the ring on the front by unscrewing, by regulating, then by screwing the 3 small screws with the