Vince68 Loc: Wappingers Falls, NY

Nikon 24-70mm 2.8 VR vs Sigma Art vs Tamron G2 https://fstoppers.com/originals/nikon-24-70mm-28-vr-vs-sigma-art-vs-tamron-g2-204182

mas24 Loc: Southern CA

There are a number of third party lenses manufacturers that make lenses. However, the most esteemed seem to be the Tamron and Sigma presently. Tokina's 24-70mm f2.8 is praised too, and is less than the Tamron and Sigma. I saw a video on comparisons of the big three competitors of the 24-70mm f2.8, by pro photographer Matt Granger. He said the Nikon 24-70mm f2.8 is #1, the Canon #2, and the Tamron #3. And that Tamron was not the G2 version on that Video. Assuming that the G2 is better than the previous version, I can understand why it is rated slightly higher than the Sigma 24-70mm, from this F-Stoppers article. But this doesn't mean all Tamron lenses are better than Sigma's. Each has certain premium lenses. I think all Sigma's Art lenses are still excellent.

Vince68 Loc: Wappingers Falls, NY

I didn't say all Tamron lenses were better than Sigma lenses, and the reviewer in the original post didn't say that either. The Sigma 24-70mm is an ART Lens. Here is another review of the Sigma compared to Canon, Nikon, and the old Tamron 24-70, not the G2 version. Lens Rental was not impressed all that much with the Sigma 24-70mm. https://www.lensrentals.com/blog/2017/07/sigma-24-70mm-f2-8-dg-os-hsm-art-sharpness-tests/

I own the Sigma 35mm ART and love it, so I am not bashing Sigma at all, just posting the review of various 24-70mm lenses for those that may be interested in buying that zoom range lens.

mas24 Loc: Southern CA

The article concluded giving the Tamron 24-70mm G2 lens, the edge over the Sigma 24-70mm lens. When I said all Tamron Lenses are not better than Sigmas, that was my opinion, not the writer. Sigma Art lenses are among the very best. Lens Rental have opinions too. I don't bash Tamron nor Sigma. I own one non Art telephoto Sigma lens.

foathog Loc: Greensboro, NC

Did the second party go out of business???

mas24 Loc: Southern CA

Another term for Third Party is "Aftermarket." I assume you knew that already?

foathog Loc: Greensboro, NC

that was a joke. I assumed YOU knew that already.