Nikon af s dx micro 40mm f 2 8g vs sigma 30mm f 1 4 dc hsm art?

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From Nikon AF-S DX Micro 40mm f/2.8G: Nikon AF-S DX Micro 40mm f/2.8G: A prime lens by Nikon for APS-C cameras, 40mm f/2.8. A cheap DX macro lens. Specs - Maker: Nikon - Focal length: 40mm (prime) - Maximum aperture: f/2.8 - Made for: APS-C sensors - Mounts: Nikon F - Stabilised: no - Autofocus: yes What it frames like - On APS-C (Nikon F): like 60mm on full frame; f/2.8 gives about the depth of field of f/4.2 there. - On the ...

From Sigma 30mm f/1.4 DC HSM Art: Sigma 30mm f/1.4 DC HSM Art: A prime lens by Sigma for APS-C cameras, 30mm f/1.4. Specs - Maker: Sigma - Focal length: 30mm (prime) - Maximum aperture: f/1.4 - Made for: APS-C sensors - Mounts: Canon EF, Nikon F, Pentax K - Stabilised: no - Autofocus: yes What it frames like - On APS-C (Nikon F, Pentax K): like 45mm on full frame; f/1.4 gives about the depth of field of f/2.1 there. - On ...

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