Laowa 15mm f 2 zero d vs sigma 14mm f 1 8 dg hsm art?

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From Sigma 14mm f/1.8 DG HSM Art: Sigma 14mm f/1.8 DG HSM Art: A prime lens by Sigma for Full frame cameras, 14mm f/1.8. Specs - Maker: Sigma - Focal length: 14mm (prime) - Maximum aperture: f/1.8 - Made for: Full frame sensors - Mounts: Canon EF, Nikon F, Sony E, L-Mount - Stabilised: no - Autofocus: yes What it frames like - On full frame (Canon EF, Nikon F, Sony E, L-Mount): as marked, 14mm. - On APS-C (Nikon F, Sony E, ...

From Laowa 15mm f/2 Zero-D: Laowa 15mm f/2 Zero-D: A prime lens by Laowa for Full frame cameras, 15mm f/2. A fast ultra-wide for astro; the Leica M version is sold as the LM. Specs - Maker: Laowa - Focal length: 15mm (prime) - Maximum aperture: f/2 - Made for: Full frame sensors - Mounts: Sony E, Nikon Z, Canon RF, Leica M - Stabilised: no - Autofocus: no, manual focus What it frames like - On full frame ...

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