The Sigma 50mm f/1.4 DG DN Art is a premium standard prime lens engineered for full-frame mirrorless cameras with L Mount compatibility. Featuring a bright f/1.4 maximum aperture and advanced HLA (High-response Linear Actuator) autofocus motor, this lens delivers fast, quiet focusing ideal for both stills and video work. The optical design comprises 14 elements in 11 groups, including 3 aspherical elements and 1 SLD glass element, delivering outstanding image quality and beautiful bokeh throughout the frame. With its compact, lightweight construction at just 670g, dust and splash-resistant build, and superior optical performance, this versatile 50mm is equally suited to portraiture, landscapes, and general-purpose photography. This secondhand example offers exceptional value for photographers seeking professional-grade optical performance.