Re: Fun with the Sigma 19mm
Very nice alphaman! I guess I am one of the fortunate one and got a great copy of the 16mm back when I was a early adopter of the original NEX5. Mine seems to fade at f16 and higher but 2.8 is OK and above that to f16 it is very usable. That said it is the only reason I have not gotten the 19mm. I have the 30mm and love it for hands free shooting when I don't feel like manual focusing my legacy glass.
I can see why you like your 19mm!