Sigma 17 40mm f 1 8 dc art vs sigma 28 45mm f 1 8 dg dn art?

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From Sigma 28-45mm f/1.8 DG DN Art: Sigma 28-45mm f/1.8 DG DN Art: A zoom lens by Sigma for Full frame cameras, 28-45mm f/1.8. A short zoom as bright as a prime, f/1.8 throughout. Specs - Maker: Sigma - Focal length: 28-45mm (zoom) - Maximum aperture: f/1.8 - Made for: Full frame sensors - Mounts: Sony E, L-Mount - Stabilised: no - Autofocus: yes What it frames like - On full frame (Sony E, L-Mount): as marked, 28-45mm. - On APS-C (Sony E, ...

From Sigma 17-40mm f/1.8 DC Art: Sigma 17-40mm f/1.8 DC Art: A zoom lens by Sigma for APS-C cameras, 17-40mm f/1.8. A constant f/1.8 standard zoom for APS-C mirrorless, in the spirit of the 18-35mm f/1.8 for DSLRs. Specs - Maker: Sigma - Focal length: 17-40mm (zoom) - Maximum aperture: f/1.8 - Made for: APS-C sensors - Mounts: Sony E, Fujifilm X, L-Mount, Canon RF - Stabilised: no - Autofocus: yes What it frames like - On APS-C (Sony E, Fujifilm ...

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