7artisans 28mm/f1.4 35mm/f2.0 75mm/f1.25 50mm/f1.1 Lens Set for Leica M-mount
Super Optical Quality: 7artisans 50mm / f1.1 is optimized for working on full aperture with the great sharpness and contrast as on smaller apertures by Sonnar formula and high refractive optical glasses (greater than 1.9).