You asked
What is the sigma 24 70mm f 2 8 dg dn ii art good for?
The Sigma 24-70mm f/2.8 DG DN II Art is a full frame standard zoom, and it suits everyday shooting well. The 24-70mm range covers wide scenes, street, and groups, and reaches into tighter portraits. Its constant f/2.8 keeps the same exposure through the whole zoom, which helps in dim light and gives you control over background blur. More on that in the aperture notes.
It's a solid standard zoom for landscapes too. Shoot at f/8 to f/11 for depth, and you won't need the wide aperture.
It fits Sony E and L-Mount bodies, including the Sony a7 III, Sony a7 IV, and Panasonic Lumix S5 II. It isn't stabilised, so if you shoot handheld in low light, a body with stabilisation will help.
Written by Claude from this site's pages.