Best wide angle lens for the panasonic lumix gm5?

Here is what the site says about that.

From Panasonic Lumix GM5: Panasonic Lumix GM5: A mirrorless camera by Panasonic with a 16-megapixel Micro Four Thirds sensor, announced in 2014. One of the smallest interchangeable-lens cameras with a viewfinder. Specs - Maker: Panasonic - Mount: Micro Four Thirds - Sensor: Micro Four Thirds, 17.3 x 13mm, crop factor 2.0 - Resolution: 16 megapixels - Stabilisation: none in the body; use stabilised lenses for slow shutter speeds - Announced: 2014 - Type: mirrorless camera Focal lengths ...

From Panasonic Lumix G 14mm f/2.5 II: Panasonic Lumix G 14mm f/2.5 II: A prime lens by Panasonic for Micro Four Thirds cameras, 14mm f/2.5. A tiny pancake wide-angle.

Quoted from this site's pages.