Tamron 11 20mm f 2 8 di iii a rxd vs sigma 10 18mm f 2 8 dc dn contemporary?

Here is what the site says about that.

From Tamron 11-20mm f/2.8 Di III-A RXD: Tamron 11-20mm f/2.8 Di III-A RXD: A zoom lens by Tamron for APS-C cameras, 11-20mm f/2.8. Specs - Maker: Tamron - Focal length: 11-20mm (zoom) - Maximum aperture: f/2.8 - 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 16-30mm on full frame; f/2.8 gives about the depth of field of f/4.2 there. - On ...

From Sigma 10-18mm f/2.8 DC DN Contemporary: Sigma 10-18mm f/2.8 DC DN Contemporary: A zoom lens by Sigma for APS-C cameras, 10-18mm f/2.8. Specs - Maker: Sigma - Focal length: 10-18mm (zoom) - Maximum aperture: f/2.8 - 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 X, L-Mount): like 15-27mm on full frame; f/2.8 gives about the depth of field of f/4.2 there. ...

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