The Sigma 28-70mm F2.8 DG DN is a small, fast-aperture zoom that turns in solid image quality. Sharpness is very good across most of its range of focal lengths and apertures, and chromatic aberrations are well controlled. While flare and truncated bokeh can be problematic in some situations, for those that like to travel light, this is an attractive option.
Travel and portrait photographers seeking shallow depth of field or regularly shoot in low-light conditions.;
Photographers that need a little extra at the wide end, or who shoot in inclement weather;