Leica summicron tl 23mm f 2 asph vs sigma 16mm f 1 4 dc dn contemporary?

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From Sigma 16mm f/1.4 DC DN Contemporary: Sigma 16mm f/1.4 DC DN Contemporary: A prime lens by Sigma for APS-C cameras, 16mm f/1.4. Specs - Maker: Sigma - Focal length: 16mm (prime) - Maximum aperture: f/1.4 - Made for: APS-C sensors - Mounts: Sony E, Fujifilm X, Micro Four Thirds, L-Mount, Canon RF, Nikon Z - Stabilised: no - Autofocus: yes What it frames like - On APS-C (Sony E, Fujifilm X, L-Mount, Nikon Z): like 24mm on full frame; f/1.4 gives about ...

From Leica Summicron-TL 23mm f/2 ASPH: Leica Summicron-TL 23mm f/2 ASPH: A prime lens by Leica for APS-C cameras, 23mm f/2. A 35mm-equivalent everyday lens. Specs - Maker: Leica - Focal length: 23mm (prime) - Maximum aperture: f/2 - Made for: APS-C sensors - Mounts: L-Mount - Stabilised: no - Autofocus: yes What it frames like - On APS-C (L-Mount): like 34mm on full frame; f/2 gives about the depth of field of f/3 there. - On the larger-sensor bodies of ...

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