Sigma 20mm ART lens is new and world first lens that supports MAX F1.4 aperture while having a ultra wide range of 20mm, sure its wide aperture will add more fuel to your creativity.
Recently roger cala of lens rentals .com published a very informative review of the same.
The bottom line here is pretty obvious. Despite being a wider field of view, the Sigma 20mm f/1.4 clearly has a higher resolution than either the Canon or Nikon 24mm f/1.4 lenses do in the center half of the image, and are at least the equal of the others in the outer half. That’s just flat amazing…
Click here to buy the Sigma 20mm F1.4 from Amazon | Sigma 20mm F1.4 for Canon | Nikon from B&H