Sigma 15mm f/1.4 FE lens review by PetaPixelTV: “Wide, Weird, Weighty, and Wonderful!”

Preorders:
500mm f/5.6 at BHphoto, Amazon, Adorama, FotoErhardt, Calumet, WexUK.
15mm f/1.4 fisheye at BHphoto, Amazon, Adorama, FotoErhardt, Calumet, WexUK.

More Sigma 15mm reviews:

And a full review at SonyAlphaBlog.