Best Sigma Lenses Under £800 in 2026

The all-metal, weather-sealed build and fast internal autofocus distinguish this compact 221g prime, offering full-frame coverage in a versatile 45mm focal length. Its knurled aperture ring and dust/splash-resistant I Series design provide a tactile, durable shooting experience uncommon at this size. This lens is best for portrait and street photographers who prioritize a discreet, premium-feeling walk-around lens over outright landscape sharpness.