The Rokinon Samyang 14mm F2.8 Full Frame Auto Focus Lens. It features a maximum aperture of f/2.8, wide angle and ultra wide angle capabilities, aspherical elements, and high quality construction. It comes with a warning for California Prop 65 regarding cancer and reproductive harm.

Slight blemish on the lens. I tried to capture it in the photos.  A slight blemish on a Rokinon lens may not be visible in your photos.