Best wide angle lens for the sony a7r iii?

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From Sony a7R III: Sony a7R III: A mirrorless camera by Sony with a 42.4-megapixel full frame sensor, announced in 2017. Also sold from 2021 as the a7R IIIA, with a sharper rear screen. Specs - Maker: Sony - Mount: Sony E - Sensor: Full frame, 36 x 24mm, crop factor 1.0 - Resolution: 42.4 megapixels - Stabilisation: in the body - Announced: 2017 - Type: mirrorless camera Focal lengths on it Full frame is the reference ...

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.

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