Excelllent Condition Sigma 20mm f/1.4 DG HSM Art Series Lens for Canon EF mount. I used this lens a handful of times. It's in incredible shape and like the rest of the ART series models, it's tack sharp and super fast. I bought a wider vintage PL mount cine-prime so this lens sat on a shelf for the last 2 years unfortunately. Whats notable is this lens produces highly-detailed images with exceptional sharpness and accuracy from the center to the furthest corners, allowing photo/filmmakers to make use of the entire field of view afforded by its ultra-wide viewing angle and sharpness. Another thing to note from my experience: I really don't see much of an image quality difference between this 20mm f/1.4 ART series and the Sigma FF High Speed Cine Prime Line of lenses. I've shot the Sigma FF 20mm T1.5 and I think the cine model is rehoused into a more burly cine-housing with a smoother longer throw when pulling focus. But this ART series lens in SIGNIFICANTLY cheaper AND has autofocus. Not trying to sell you, it's just been my experience. I can share frames when I used both on the Canon C500MKII with the 20mm 1.4 ART series and the 20mm T1.5 FF Cine Prime. Happy shopping feel free to ask questions!