Sigma Art | 20mm f/1.4 DG HSM – Canon

To offer both the ultra wide angle 20mm and the brightness F1.4 full open, this lens incorporates an impressive doubly aspherical lens 59 mm in diameter. Objectives of this type are extremely difficult to manufacture, but SIGMA has taken up the challenge of achieving this F1.4 ultra wide angle lens, meeting the extremely strict performance criteria of the SIGMA Art line. What made this advance possible is the advanced manufacturing technologies that SIGMA has developed over time by producing a large number of ultra wide angle lenses and wide aperture lenses.