Too good to be true for a sub 200€ lens:|
It's got decent (slow but quiet) AF on the NEX but no optical image stabilization. Sounds like a true winner. Its brother the 19mm is unfortunately not equally good, corner sharpness lags behind a bit. The 30mm looks like a perfect "one prime to go" candidate!
Sigma 30mm/2.8 DC (NEX and 4:3)