Compact APS-C f/2.8 telephoto zoom for Nikon with APO correction — a pocket 70-200mm.
The Sigma 50-150mm f/2.8 DC EX APO HSM is an APS-C telephoto zoom for Nikon F mount with a constant f/2.8 aperture, effectively providing the equivalent of a 75-225mm f/2.8 in a more compact package than full-frame 70-200mm f/2.8 alternatives. The APO designation indicates apochromatic correction for superior colour accuracy.
Optical quality is very good with the APO glass elements delivering sharp, well-corrected images with minimal chromatic aberration. The constant f/2.8 provides consistent subject isolation and low-light capability across the zoom range. Performance is particularly strong at 100-135mm, the sweet spot for portrait photography.
Build quality follows Sigma's EX premium tier with robust construction, HSM autofocus, and quality that handles professional use. The lens is noticeably smaller and lighter than comparable full-frame 70-200mm f/2.8 zooms, making it a more practical option for APS-C shooters who value portability without sacrificing aperture speed.
On the used market, the Sigma 50-150mm f/2.8 offers the telephoto speed of a 70-200mm f/2.8 in a more compact APS-C-optimised package at much lower prices. For Nikon DX shooters wanting fast telephoto zoom capability for sports, portraits, and events, it delivers professional-grade performance in a portable format.