Sigma 15mm f 1 4 dc contemporary vs sirui sniper 16mm f 1 2?

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From Sigma 15mm f/1.4 DC Contemporary: Sigma 15mm f/1.4 DC Contemporary: A prime lens by Sigma for APS-C cameras, 15mm f/1.4. A fast wide prime for APS-C, about 22.5mm equivalent. Specs - Maker: Sigma - Focal length: 15mm (prime) - Maximum aperture: f/1.4 - Made for: APS-C sensors - Mounts: Sony E, Fujifilm X, Canon RF - Stabilised: no - Autofocus: yes What it frames like - On APS-C (Sony E, Fujifilm X): like 22mm on full frame; f/1.4 gives about ...

From Sirui Sniper 16mm f/1.2: Sirui Sniper 16mm f/1.2: A prime lens by Sirui for APS-C cameras, 16mm f/1.2. Specs - Maker: Sirui - Focal length: 16mm (prime) - Maximum aperture: f/1.2 - Made for: APS-C sensors - Mounts: Sony E, Fujifilm X, Nikon Z - Stabilised: no - Autofocus: yes What it frames like - On APS-C (Sony E, Fujifilm X, Nikon Z): like 24mm on full frame; f/1.2 gives about the depth of field of f/1.8 there. ...

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