Best Sigma Portrait Lenses Under £400 in 2026

The Sigma MC-11 enables Canon EF lenses to retain autofocus, image stabilization, and EXIF metadata when used on Sony E-mount cameras. Its firmware-updatable design and solid metal build ensure reliable performance with a broad selection of Sigma and Canon optics. This converter is best for portrait shooters adapting EF glass to E-mount and willing to trade macro precision for dependable autofocus at a budget-friendly price point.

Weighing just 370g with a weather-sealed all-metal build, this 20mm f/2 prime delivers ultra-wide composition and fast aperture in a compact L-mount package. The STM autofocus enables smooth video pulls, while three aspherical and two ED elements minimize distortion and aberrations across the frame. Best for travel and landscape photographers who need a lightweight, durable wide-angle lens with decent low-light capability for handheld shooting.