This is the Voigtländer Nokton 35 f1.2 II which performs very well on the Nex bodies as well as on the M43 Olympus cameras. I always had problem using manual focus lenses on the Panasonic cameras when I started out with these lenses and I never used a Panasonic body for this afterwards. I won't in the future either because I'm so used to the Olympus and Nex bodies now.
It's a very nice lens and quite heavy but namageble on these new Alpha bodies, quite comfortable to hold. Again, testing has to be done but I do have high hopes for this lens, I just hope I won't get any colour shifts on the A7. I had a slight ptoblem on the Nex-7 but not on the Nex-5N. Thinking about it I might test this lens after I write this blog post since I have them in my hands, and it might interest some of you out there.