Is sigma 19mm really better than the kit lens?

well actually theres no difference.. maybe just so small you cant see it if not pixel peeping.. just look at my review -- SIGMA 19 and 30 vs SET ZOOM on NEX-7 .. with 100% crops.

http://www.fotoradce.cz/recenze-sigma-30mm-19mm-f2-8-ex-dn-pro-sony-nex-clanekid1138

please use google translator because its not in english.