Sigma Files Patent for Groundbreaking 15mm f/1.2 Full Frame Lens
The image above shows the optical design of a lens that has never existed before: Sigma’s patented 15mm f/1.2 full-frame lens.
For now, this is just a patent, with no guarantee Sigma will ever bring it to market. According to the patent, the lens would measure 16.3 cm in length — only about half a centimeter longer than Sigma’s current 15mm f/1.4 fisheye. But unlike the fisheye, this new f/1.2 would be a standard rectilinear ultra-wide, which makes it all the more remarkable.
Would you consider buying such a lens? And what would you use it for? Given Sigma’s track record, they just might make this a reality!