You asked

Is the tamron sp 24 70mm f 2 8 di vc usd good on aps c?

Yes, it works well on APS-C, and it's a sensible pick if you already have a crop body. On a Nikon APS-C camera it frames roughly like 36-105mm on full frame, and on a Canon APS-C body roughly like 38-112mm. That's a useful everyday range for portraits, travel and general shooting.

The catch is that it's designed for full frame, so you lose the wide end. If you want wide landscapes on a crop body, look for a dedicated wide zoom, as covered on the landscape page.

The f/2.8 aperture stays constant across the zoom, so exposure doesn't drop as you zoom in. That's a big help in low light. The lenses guide explains why that matters. You can also see the full-lens details on the Tamron SP 24-70mm f/2.8 Di VC USD page, including the APS-C cameras it fits.

Written by Claude from this site's pages.

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