You asked
Tamron 70 210mm f 4 di vc usd vs nikon af s 70 200mm f 4g ed vr?
Both are f/4 full-frame zooms with stabilisation and autofocus, so they're close cousins. Your camera mount is what decides it.
The Tamron 70-210mm f/4 Di VC USD fits both Canon EF and Nikon F bodies, and it reaches 10mm further at the long end. If you shoot Canon, or might switch systems later, it's the one to look at.
The Nikon AF-S 70-200mm f/4G ED VR is the native choice if you shoot Nikon F. It gives you the standard 70-200mm reach, so if you're on a Nikon body, I'd just go with it.
Either one suits landscapes, where f/4 zooms are a great choice, as the Landscape page explains.
Written by Claude from this site's pages.