You asked
Is the tamron sp 24 70mm f 2 8 di vc usd good for vlogging?
The site doesn't say how well this lens suits vlogging, so I can't give you a verdict on that. What the page does list is useful: it's stabilised, it autofocuses, and it has a constant f/2.8 aperture, so exposure stays the same as you zoom. That's handy when you're moving around and framing yourself.
It's the first-generation version and a common used buy. It fits Canon EF and Nikon F full-frame cameras, and it also works on APS-C bodies, where the framing tightens to roughly 36-105mm (Nikon) or 38-112mm (Canon).
For the video side, Video covers which camera features matter more than the spec sheet. The Lenses guide explains why a constant aperture helps.
Written by Claude from this site's pages.