Tamron 70 180mm f 2 8 di iii vxd vs sigma 70 200mm f 2 8 dg dn os sports?

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From Sigma 70-200mm f/2.8 DG DN OS Sports: Sigma 70-200mm f/2.8 DG DN OS Sports: A zoom lens by Sigma for Full frame cameras, 70-200mm f/2.8. Specs - Maker: Sigma - Focal length: 70-200mm (zoom) - Maximum aperture: f/2.8 - Made for: Full frame sensors - Mounts: Sony E, L-Mount - Stabilised: yes - Autofocus: yes What it frames like - On full frame (Sony E, L-Mount): as marked, 70-200mm. - On APS-C (Sony E, L-Mount): like 105-300mm on full frame; f/2.8 gives about the ...

From Tamron 70-180mm f/2.8 Di III VXD: Tamron 70-180mm f/2.8 Di III VXD: A zoom lens by Tamron for Full frame cameras, 70-180mm f/2.8. The first-generation version, without stabilisation; discontinued but common used. Specs - Maker: Tamron - Focal length: 70-180mm (zoom) - Maximum aperture: f/2.8 - Made for: Full frame sensors - Mounts: Sony E - Stabilised: no - Autofocus: yes What it frames like - On full frame (Sony E): as marked, 70-180mm. - On APS-C (Sony E): like 105-270mm on ...

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