Sigma 28mm f/1.4 DG HSM | Art - unknown Mount

The Sigma 28mm f/1.4 DG HSM Art is a classic wide-angle prime favoured by photojournalists for its natural perspective and exceptional sharpness. It features a complex optical design to virtually eliminate chromatic aberration and distortion. The lens is weather-sealed and built to a professional standard, offering a robust alternative to native manufacturer primes for full-frame systems. Check for any signs of moisture ingress or dust behind the rear element. The HSM motor should be tested for speed and accuracy; any hesitation during focusing should be noted. SDS verifies that the iris blades are clean and free from oil, ensuring snappy aperture transitions. The physical barrel should be inspected for impact marks, particularly near the filter thread, and the mount should lock securely without excessive play.