Best wide angle lens for the sony nex 6?

Here is what the site says about that.

From Sony NEX-6: Sony NEX-6: A mirrorless camera by Sony with a 16.1-megapixel APS-C sensor, announced in 2012. Specs - Maker: Sony - Mount: Sony E - Sensor: APS-C, 23.5 x 15.6mm, crop factor 1.5 - Resolution: 16.1 megapixels - Stabilisation: none in the body; use stabilised lenses for slow shutter speeds - Announced: 2012 - Type: mirrorless camera Focal lengths on it Lenses frame like 1.5 times their focal length on full frame: 16mm ...

From Sony E 16mm f/2.8: Sony E 16mm f/2.8: A prime lens by Sony for APS-C cameras, 16mm f/2.8. A pancake wide-angle from the NEX era.

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