I've used this lens quite a bit on the m4/3 system and on the Nex-5N but not really on the Nex-7. This sensor really does require very good lenses to shine. Although focusing is quite good using the peeking (or is it peaking?) function my eyes aren't what they used to be and the more I use these legacy lenses the more I tend to appreciate AF lenses. I think I'll start using the Nex-7 with the LA-EA2.
Lenses that I can use are the 85 f2.8, the 35 f1.8 and the 50 f1.4. This way I get AF using PDAF.