Sony fe 12 24mm f 2 8 gm vs tamron 12 20mm f 2 8?

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From Sony FE 12-24mm f/2.8 GM: Sony FE 12-24mm f/2.8 GM: A zoom lens by Sony for Full frame cameras, 12-24mm f/2.8. Specs - Maker: Sony - Focal length: 12-24mm (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, 12-24mm. - On APS-C (Sony E): like 18-36mm on full frame; f/2.8 gives about the depth of field ...

From Tamron 12-20mm f/2.8: Tamron 12-20mm f/2.8: A zoom lens by Tamron for Full frame cameras, 12-20mm f/2.8. A 570-gram constant f/2.8 zoom that reaches 12mm on full frame. Specs - Maker: Tamron - Focal length: 12-20mm (zoom) - Maximum aperture: f/2.8 - Made for: Full frame sensors - Mounts: Sony E, Nikon Z - Stabilised: no - Autofocus: yes What it frames like - On full frame (Sony E, Nikon Z): as marked, 12-20mm. - On ...

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