Sigma 19mm f/2.8 DN Art - unknown Mount

The Sigma 19mm f/2.8 DN Art is a compact wide-angle prime lens designed for mirrorless systems, specifically Sony E-mount and Micro Four Thirds. It features a linear AF motor for quiet operation and a three-glass mould aspherical lens construction to correct distortion and aberration. Its focal length is well-suited for street photography and landscape work where a slim profile is preferred. When inspecting a used copy, the internal focusing mechanism should be checked for smoothness, as this lens uses a floating linear motor that rattles slightly when the camera is powered off; this is normal design and not a fault. SDS verifies the rear mount contacts for wear and ensures the glass is free from internal dust or haze that can occasionally affect these compact primes.