Best wide angle lens for the sony a7 ii?

Here is what the site says about that.

From Sony a7 II: Sony a7 II: A mirrorless camera by Sony with a 24.3-megapixel full frame sensor, announced in 2014. A cheap used way into stabilised full frame. Specs - Maker: Sony - Mount: Sony E - Sensor: Full frame, 36 x 24mm, crop factor 1.0 - Resolution: 24.3 megapixels - Stabilisation: in the body - Announced: 2014 - Type: mirrorless camera Focal lengths on it Full frame is the reference size: lenses frame as marked. ...

From Laowa 15mm f/4 Wide Angle Macro: Laowa 15mm f/4 Wide Angle Macro: A macro lens by Laowa for Full frame cameras, 15mm f/4. An ultra-wide that focuses to 1:1.

Quoted from this site's pages.