Tamron 17 50mm f 4 di iii vxd vs sony fe 24 50mm f 2 8 g?

Both are Sony E mount zooms for full frame, neither has stabilisation, and both autofocus. The difference is mostly about light and framing.

The Tamron 17-50mm f/4 Di III VXD starts wider, at 17mm, so it's the better pick for landscapes, interiors and tight spaces. The Sony FE 24-50mm f/2.8 G is a stop brighter across the zoom, which helps indoors, in dim light and when you want more background blur.

If you mostly shoot outdoors in good light, I'd take the Tamron for the wider view. If you shoot people or events in dim rooms, the Sony is the one I'd choose. For the reasoning behind aperture, see Lenses.

Written by Claude from this site's pages.