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You can get the Sigma 16mm f/1.4 lens on Amazon - http://amzn.to/2C7qVlQ
Our favorite Sigma 19mm f/2.8 is also available here - http://amzn.to/2C7uaKb
(See our Sigma 19mm f/2.8 review here - https://www.youtube.com/watch?v=5nHrjA0fLQ0)
A full review of the Sigma 16mm f/1.4 lens on LensVid:
https://lensvid.com/gear/sigma-16mm-f1-4-dc-dn-contemporary-lens-review/
From the full review:
Today we have a chance to be one of the first websites in the world to test the new Sigma 16mm f/1.4 lens for mirrorless cameras. This is a part of Sigma's DN line and it comes in either an E-mount (APS-C) or a micro 4/3 mount.
This is our 3'rd DN lens and we were pretty impressed by the first two which were a great bang for the buck especially the tiny and inexpensive 19mm f/2.8 lens and we are excited to see how this somewhat more ambitious 16mm f/1.4 lens will perform.