Congratulations - it's a great little lens. I'm still hoping they'll come up with a 16 and a 24 in the same range and at the same price.
Heavily debating on getting the 30mm. Only complaint is when manually focusing, it takes a lot to go all the way around.
Nice pictures. The 19 is a very good lens, the 30 is better again. Used them on my 5N and swore by them for a long time. Bought a 6 and a CZ 24 and gave the 5N and Sigmas to my Son..................Doh!