Overview

The Canon EF 100mm f/2 USM is a compact, lightweight portrait telephoto lens with solid build quality and a fast, quiet Ring USM AF. Optically, it delivers good contrast and saturation, negligible distortion, and pleasing background blur, though some chromatic aberration and vignetting are present wide open. It suits low-light action, indoor events, and portraits, but for daytime outdoor sports a zoom may be preferred.