Irix is known mostly for making manual focus wide angle lenses with rugged build quality and nice image quality, and the new 21mm f/1.4 Dragonfly lens seeks to continue that trend. The lens comes in Canon, Nikon, and Pentax DSLR mounts (and can be easily adapted to mirrorless), and this fantastic video review takes a look at the sort of performance and image quality you can expect from it in practice.