Overview

The Sigma 90mm F2.8 DG DN is a compact, well-built short telephoto prime for full-frame mirrorless, praised for its metal construction, smooth controls, and magnetic lens cap. Optically, it delivers impressive resolution but has notable RAW distortion (2.8% pincushion) and vignetting (2.4 EV at f/2.8), though auto-correction mitigates these. Its f/2.8 aperture is slower than typical portrait primes, but the lens is exceptionally small and light (295g), making it ideal for travel and street photography. It suits users prioritizing portability and build quality over maximum speed.