8–16mm · f/4.5–5.6
The Sigma 8-16mm F4.5-5.6 DC HSM is an ultra-wide zoom for APS-C cameras, offering the widest rectilinear view at 8mm. Optically, it is very sharp even wide open, with low chromatic aberration and good flare resistance. However, build and handling have mixed reviews: solid construction and smooth manual focus but iffy, noisy autofocus and no filter capability. It suits landscape, interior, and creative portrait photographers seeking extreme angles.