Love the selfie! Very creative! Nice set.
The Sigma looks nice. What is that bright light source in all of your photos? It reminds me of something we used to have in Wisconsin called the sun.
Some nice shots there. Sigma has really come a long way since their film days. The 19 and 30 on their dp1 and 2 Merrill's is just great. I have been told the formula for the Nex and m43 versions is different, but it looks good to me.