I'm a long time canon guy and just bought an em10 for a travel camera. One of the lenses I bought was the Sigma 30mm 2.8 art. I wasn't expecting DSLR results and it was only $199 so what the heck. Boy was I wrong! This lens is BRILLIANT! If the other lenses I'm buying over the next 2 months compare to this one, I'm going to be putting my Canon back in the closet. I'm thinking about the Sigma 19mm now. Anyone else shooting the Sigmas?