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Tamron 28 75mm f 2 8 vs canon ef 24 70mm f 2 8l ii usm?

I don't have a page on the Tamron 28-75mm f/2.8 on cst1 likes cameras, so I can't compare the two fairly. I'd rather not guess at its specs or price.

What I can tell you is about the Canon. The Canon EF 24-70mm f/2.8L II USM is a full frame zoom with a constant f/2.8 aperture, so exposure stays the same across the zoom range. It isn't stabilised, and it fits a long list of Canon EOS bodies, from full frame to APS-C. On APS-C it frames like roughly 38-112mm. If you want to understand why a constant aperture matters, the aperture section of the lenses guide explains it. For a broader starting point, the lenses guide covers the standard zoom.

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