Canon ef 24 70mm f 4l is usm vs tamron sp 24 70mm f 2 8 di vc usd?

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From Tamron SP 24-70mm f/2.8 Di VC USD: Tamron SP 24-70mm f/2.8 Di VC USD: A zoom lens by Tamron for Full frame cameras, 24-70mm f/2.8. The first-generation version; still a common used buy. Specs - Maker: Tamron - Focal length: 24-70mm (zoom) - Maximum aperture: f/2.8 - Made for: Full frame sensors - Mounts: Canon EF, Nikon F - Stabilised: yes - Autofocus: yes What it frames like - On full frame (Canon EF, Nikon F): as marked, 24-70mm. - On APS-C (Nikon F): ...

From Canon EF 24-70mm f/4L IS USM: Canon EF 24-70mm f/4L IS USM: A zoom lens by Canon for Full frame cameras, 24-70mm f/4. Specs - Maker: Canon - Focal length: 24-70mm (zoom) - Maximum aperture: f/4 - Made for: Full frame sensors - Mounts: Canon EF - Stabilised: yes - Autofocus: yes What it frames like - On full frame (Canon EF): as marked, 24-70mm. - On APS-C (Canon) (Canon EF): like 38-112mm on full frame; f/4 gives about the depth of ...

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