Sigma 12 24mm f 4 dg hsm art vs nikon af s 14 24mm f 2 8g ed?

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From Nikon AF-S 14-24mm f/2.8G ED: Nikon AF-S 14-24mm f/2.8G ED: A zoom lens by Nikon for Full frame cameras, 14-24mm f/2.8. Specs - Maker: Nikon - Focal length: 14-24mm (zoom) - Maximum aperture: f/2.8 - Made for: Full frame sensors - Mounts: Nikon F - Stabilised: no - Autofocus: yes What it frames like - On full frame (Nikon F): as marked, 14-24mm. - On APS-C (Nikon F): like 21-36mm on full frame; f/2.8 gives about the depth of field ...

From Sigma 12-24mm f/4 DG HSM Art: Sigma 12-24mm f/4 DG HSM Art: A zoom lens by Sigma for Full frame cameras, 12-24mm f/4. Specs - Maker: Sigma - Focal length: 12-24mm (zoom) - Maximum aperture: f/4 - Made for: Full frame sensors - Mounts: Canon EF, Nikon F - Stabilised: no - Autofocus: yes What it frames like - On full frame (Canon EF, Nikon F): as marked, 12-24mm. - On APS-C (Nikon F): like 18-36mm on full frame; f/4 gives about ...

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