received mine today and it is very nicely finished. to my surprise not only is it basically a 30mm lens but it has significant barrel distortion. distortion is not a big deal but i did not buy a 30mm lens so it will be going back. so far i can’t seem to find anything better than the 2.8 za for its portability/iq factor. the sigma is not any sharper than the za at 2.8 but at this point i guess both lenses out resolve my R2
