Best wide angle lens for the sony nex 7?

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From Sony NEX-7: Sony NEX-7: A mirrorless camera by Sony with a 24.3-megapixel APS-C sensor, announced in 2011. An early enthusiast body with a built-in viewfinder and three control dials. Specs - Maker: Sony - Mount: Sony E - Sensor: APS-C, 23.5 x 15.6mm, crop factor 1.5 - Resolution: 24.3 megapixels - Stabilisation: none in the body; use stabilised lenses for slow shutter speeds - Announced: 2011 - Type: mirrorless camera Focal lengths on it ...

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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