Sigma Super Wide Angle 20mm f/1.8 EX Aspherical DG DF RF Autofocus Lens for Canon EOS
This Sigma prime is the fastest wide angle available at the 20mm focal point, an excellent wide perspective without getting too distorted. The f1.8 maximum aperture lends an excellent depth of field to the images, as well as superior low light performance. But, versatility is important, even when dealing with primes, and this Sigma delivers with a 2.6 inch minimum focusing distance, which means it can be used for some types of macro photography too. The lens weighs just over a pound and is constructed with 13 elements, including two aspherical elements. For the speed and features, the price is also excellent.