The Sigma 16mm f/1.4 DC DN C lens is a new announced Sony E-mount lens, the price and release date for this lens is not available yet, you can check price and pre-order option at B&H Photo. The above Sigma 16mm f/1.4 lens first impression video is by Jason Vong from PhotoPlus EXPO.
dpreview also had a chance to take some hand-on pictures of Sigma 16mm f/1.4 DC DN C lens on Sony a6300. From the hands-on images, we can see that Sigma 16mm f/1.4 DC DN C lens is not very big lens, it fits Sony a6300 well. dpreview staff says:
In person, the new lens is a relatively small, but beautifully well-made prime that fills a useful gap in focal lengths for both systems.